Finding the Fourth Proportional to 22,527.50, 31,086.61 and 12,455.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,527.50 : 31,086.61 = 12,455.15 : x
2. Step 2: Convert to fraction form
   22,527.50/31,086.61 = 12,455.15/x
3. Step 3: Cross multiply
   22,527.50x = 31,086.61 × 12,455.15
4. Step 4: Simplify right side
   22,527.50x = 387,188,203.97
5. Step 5: Solve for x
   x = 387,188,203.97/22,527.50
6. Step 6: Final answer
   x = 17,187.36