Excellent shooting and her pace in the run helped Prokopenko to climb from 11th place at the start of the combined to take the Gold. Earlier she had won the fencing.
Silver went to current World Champion Victoria Tereshuk (UKR) whose training has been hampered by injury which has meant she hasn't been able to put the shooting and running together away from competition. Tereschuk told UIPM she believed she would be in even better form at the upcoming World Championships.
But for Prokopenko it was all joy. "Today my back is sore but my passion got me through," she said. "My shooting has been good in training and I really believed in it today. I am very happy."
Murray was very disappointed not to have held on for silver, but she could see the positives after a fine performance.
"It is a great performance, she said. "My first world cup medal. My running is normally better but today I didn't have it in my legs."
She acknowledged that having two such fast runners chasing her down could have affected her shooting: "When I was shooting that was on my mind."
For the athletes who finished outside the medals there was the consolation of vital ranking points as we head to the climax of the season.