Finding the Fourth Proportional to 22,965.38, 31,684.29 and 12,892.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,965.38 : 31,684.29 = 12,892.42 : x
2. Step 2: Convert to fraction form
   22,965.38/31,684.29 = 12,892.42/x
3. Step 3: Cross multiply
   22,965.38x = 31,684.29 × 12,892.42
4. Step 4: Simplify right side
   22,965.38x = 408,487,174.08
5. Step 5: Solve for x
   x = 408,487,174.08/22,965.38
6. Step 6: Final answer
   x = 17,787.09