Finding the Fourth Proportional to 22,602.56, 31,191.76 and 12,531.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,602.56 : 31,191.76 = 12,531.20 : x
2. Step 2: Convert to fraction form
   22,602.56/31,191.76 = 12,531.20/x
3. Step 3: Cross multiply
   22,602.56x = 31,191.76 × 12,531.20
4. Step 4: Simplify right side
   22,602.56x = 390,870,182.91
5. Step 5: Solve for x
   x = 390,870,182.91/22,602.56
6. Step 6: Final answer
   x = 17,293.18