Finding the Fourth Proportional to 17,875.89, 24,668.55 and 9,917.91

Step by Step Solution

1. Step 1: Write the proportion equation
   17,875.89 : 24,668.55 = 9,917.91 : x
2. Step 2: Convert to fraction form
   17,875.89/24,668.55 = 9,917.91/x
3. Step 3: Cross multiply
   17,875.89x = 24,668.55 × 9,917.91
4. Step 4: Simplify right side
   17,875.89x = 244,660,458.73
5. Step 5: Solve for x
   x = 244,660,458.73/17,875.89
6. Step 6: Final answer
   x = 13,686.62