Finding the Fourth Proportional to 22,434.43, 30,957.03 and 12,871.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,434.43 : 30,957.03 = 12,871.75 : x
2. Step 2: Convert to fraction form
   22,434.43/30,957.03 = 12,871.75/x
3. Step 3: Cross multiply
   22,434.43x = 30,957.03 × 12,871.75
4. Step 4: Simplify right side
   22,434.43x = 398,471,150.90
5. Step 5: Solve for x
   x = 398,471,150.90/22,434.43
6. Step 6: Final answer
   x = 17,761.59