Finding the Fourth Proportional to 22,642.12, 31,243.89 and 12,568.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,642.12 : 31,243.89 = 12,568.15 : x
2. Step 2: Convert to fraction form
   22,642.12/31,243.89 = 12,568.15/x
3. Step 3: Cross multiply
   22,642.12x = 31,243.89 × 12,568.15
4. Step 4: Simplify right side
   22,642.12x = 392,677,896.10
5. Step 5: Solve for x
   x = 392,677,896.10/22,642.12
6. Step 6: Final answer
   x = 17,342.81