Finding the Fourth Proportional to 22,527.71, 31,086.99 and 12,455.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,527.71 : 31,086.99 = 12,455.57 : x
2. Step 2: Convert to fraction form
   22,527.71/31,086.99 = 12,455.57/x
3. Step 3: Cross multiply
   22,527.71x = 31,086.99 × 12,455.57
4. Step 4: Simplify right side
   22,527.71x = 387,206,024.60
5. Step 5: Solve for x
   x = 387,206,024.60/22,527.71
6. Step 6: Final answer
   x = 17,187.99