Finding the Fourth Proportional to 17,859.90, 24,647.88 and 9,902.86

Step by Step Solution

1. Step 1: Write the proportion equation
   17,859.90 : 24,647.88 = 9,902.86 : x
2. Step 2: Convert to fraction form
   17,859.90/24,647.88 = 9,902.86/x
3. Step 3: Cross multiply
   17,859.90x = 24,647.88 × 9,902.86
4. Step 4: Simplify right side
   17,859.90x = 244,084,504.94
5. Step 5: Solve for x
   x = 244,084,504.94/17,859.90
6. Step 6: Final answer
   x = 13,666.62