Finding the Fourth Proportional to 22,965.47, 31,691.31 and 12,893.73

Step by Step Solution

1. Step 1: Write the proportion equation
   22,965.47 : 31,691.31 = 12,893.73 : x
2. Step 2: Convert to fraction form
   22,965.47/31,691.31 = 12,893.73/x
3. Step 3: Cross multiply
   22,965.47x = 31,691.31 × 12,893.73
4. Step 4: Simplify right side
   22,965.47x = 408,619,194.49
5. Step 5: Solve for x
   x = 408,619,194.49/22,965.47
6. Step 6: Final answer
   x = 17,792.76