DES MOINES, Iowa — The numbers were drawn Monday night for an estimated $785 million Powerball jackpot that is the ninth-largest lottery prize. The winning numbers announced were: 10, 12, 22, 36, 50 and 4. It usually takes several hours for lottery officials to determine if anyone has won the giant jackpot. The payout has grown so large because it has been building for more than two months, since a player in California matched all six numbers on July 19 and won $1.08 billion.