Finding the Fourth Proportional to 17,872.80, 24,667.42 and 9,917.59

Step by Step Solution

1. Step 1: Write the proportion equation
   17,872.80 : 24,667.42 = 9,917.59 : x
2. Step 2: Convert to fraction form
   17,872.80/24,667.42 = 9,917.59/x
3. Step 3: Cross multiply
   17,872.80x = 24,667.42 × 9,917.59
4. Step 4: Simplify right side
   17,872.80x = 244,641,336.30
5. Step 5: Solve for x
   x = 244,641,336.30/17,872.80
6. Step 6: Final answer
   x = 13,687.91