Chemistry help required?

Today we did a lab in chemistry cl where we were given an unknown solution and we had to determine its identity using 11 other solutions, 4 metals, and using a flame test with nickel wire. Me and my lab partner's unknown solution formed a precipitate with Sodium Hydroxide and Silver Nitrate. No other chemical reactions occurred. The result of the flame test was that an orange flame was produced. How can I determine the identity of the solution?