Finding the Fourth Proportional to 22,581.06, 31,159.71 and 12,509.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581.06 : 31,159.71 = 12,509.29 : x
2. Step 2: Convert to fraction form
   22,581.06/31,159.71 = 12,509.29/x
3. Step 3: Cross multiply
   22,581.06x = 31,159.71 × 12,509.29
4. Step 4: Simplify right side
   22,581.06x = 389,785,770.81
5. Step 5: Solve for x
   x = 389,785,770.81/22,581.06
6. Step 6: Final answer
   x = 17,261.62