Finding the Fourth Proportional to 31,532.72, 43,514.34 and 17,385.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,532.72 : 43,514.34 = 17,385.32 : x
2. Step 2: Convert to fraction form
   31,532.72/43,514.34 = 17,385.32/x
3. Step 3: Cross multiply
   31,532.72x = 43,514.34 × 17,385.32
4. Step 4: Simplify right side
   31,532.72x = 756,510,725.49
5. Step 5: Solve for x
   x = 756,510,725.49/31,532.72
6. Step 6: Final answer
   x = 23,991.29