Finding the Fourth Proportional to 17,932.42, 24,732.01 and 15,917.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,932.42 : 24,732.01 = 15,917.31 : x
2. Step 2: Convert to fraction form
   17,932.42/24,732.01 = 15,917.31/x
3. Step 3: Cross multiply
   17,932.42x = 24,732.01 × 15,917.31
4. Step 4: Simplify right side
   17,932.42x = 393,667,070.09
5. Step 5: Solve for x
   x = 393,667,070.09/17,932.42
6. Step 6: Final answer
   x = 21,952.81