Finding the Fourth Proportional to 31,532.42, 43,513.84 and 17,385.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,532.42 : 43,513.84 = 17,385.28 : x
2. Step 2: Convert to fraction form
   31,532.42/43,513.84 = 17,385.28/x
3. Step 3: Cross multiply
   31,532.42x = 43,513.84 × 17,385.28
4. Step 4: Simplify right side
   31,532.42x = 756,500,292.28
5. Step 5: Solve for x
   x = 756,500,292.28/31,532.42
6. Step 6: Final answer
   x = 23,991.19