Finding the Fourth Proportional to 22,541.59, 31,132.92 and 15,359.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,541.59 : 31,132.92 = 15,359.05 : x
2. Step 2: Convert to fraction form
   22,541.59/31,132.92 = 15,359.05/x
3. Step 3: Cross multiply
   22,541.59x = 31,132.92 × 15,359.05
4. Step 4: Simplify right side
   22,541.59x = 478,172,074.93
5. Step 5: Solve for x
   x = 478,172,074.93/22,541.59
6. Step 6: Final answer
   x = 21,212.88