Finding the Fourth Proportional to 22,581.63, 31,159.53 and 12,507.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581.63 : 31,159.53 = 12,507.57 : x
2. Step 2: Convert to fraction form
   22,581.63/31,159.53 = 12,507.57/x
3. Step 3: Cross multiply
   22,581.63x = 31,159.53 × 12,507.57
4. Step 4: Simplify right side
   22,581.63x = 389,730,002.64
5. Step 5: Solve for x
   x = 389,730,002.64/22,581.63
6. Step 6: Final answer
   x = 17,258.72