Finding the Fourth Proportional to 17,857.89, 24,645.13 and 9,900.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,857.89 : 24,645.13 = 9,900.86 : x
2. Step 2: Convert to fraction form
   17,857.89/24,645.13 = 9,900.86/x
3. Step 3: Cross multiply
   17,857.89x = 24,645.13 × 9,900.86
4. Step 4: Simplify right side
   17,857.89x = 244,007,833.83
5. Step 5: Solve for x
   x = 244,007,833.83/17,857.89
6. Step 6: Final answer
   x = 13,663.87