Finding the Fourth Proportional to 22,565.12, 31,141.68 and 12,496.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,565.12 : 31,141.68 = 12,496.72 : x
2. Step 2: Convert to fraction form
   22,565.12/31,141.68 = 12,496.72/x
3. Step 3: Cross multiply
   22,565.12x = 31,141.68 × 12,496.72
4. Step 4: Simplify right side
   22,565.12x = 389,168,855.29
5. Step 5: Solve for x
   x = 389,168,855.29/22,565.12
6. Step 6: Final answer
   x = 17,246.48