What is the geometric average return for this four-year period?

Over the last four years a stock has head on arithmetic average of 12.8 percent. Three of those four year produced returns of 22.6 percent 15.2 percent, and 24.5 percent respectively what is the geometric for this four-year period? 10.18 percent 12.40 percent 12.67 percent 8.39 percent 11.67 percent