Finding the Fourth Proportional to 22,565.32, 31,139 and 12,494.04

Step by Step Solution

1. Step 1: Write the proportion equation
   22,565.32 : 31,139 = 12,494.04 : x
2. Step 2: Convert to fraction form
   22,565.32/31,139 = 12,494.04/x
3. Step 3: Cross multiply
   22,565.32x = 31,139 × 12,494.04
4. Step 4: Simplify right side
   22,565.32x = 389,051,911.56
5. Step 5: Solve for x
   x = 389,051,911.56/22,565.32
6. Step 6: Final answer
   x = 17,241.14