Finding the Fourth Proportional to 17,686.86, 24,408.06 and 9,729.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.86 : 24,408.06 = 9,729.15 : x
2. Step 2: Convert to fraction form
   17,686.86/24,408.06 = 9,729.15/x
3. Step 3: Cross multiply
   17,686.86x = 24,408.06 × 9,729.15
4. Step 4: Simplify right side
   17,686.86x = 237,469,676.95
5. Step 5: Solve for x
   x = 237,469,676.95/17,686.86
6. Step 6: Final answer
   x = 13,426.33