Finding the Fourth Proportional to 17,686.56, 24,408.72 and 9,729.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,686.56 : 24,408.72 = 9,729.12 : x
2. Step 2: Convert to fraction form
   17,686.56/24,408.72 = 9,729.12/x
3. Step 3: Cross multiply
   17,686.56x = 24,408.72 × 9,729.12
4. Step 4: Simplify right side
   17,686.56x = 237,475,365.93
5. Step 5: Solve for x
   x = 237,475,365.93/17,686.56
6. Step 6: Final answer
   x = 13,426.88