Finding the Fourth Proportional to 22,581.43, 31,160.55 and 12,510.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581.43 : 31,160.55 = 12,510.30 : x
2. Step 2: Convert to fraction form
   22,581.43/31,160.55 = 12,510.30/x
3. Step 3: Cross multiply
   22,581.43x = 31,160.55 × 12,510.30
4. Step 4: Simplify right side
   22,581.43x = 389,827,746.78
5. Step 5: Solve for x
   x = 389,827,746.78/22,581.43
6. Step 6: Final answer
   x = 17,263.20