Finding the Fourth Proportional to 17,687.76, 24,408.69 and 9,729.81

Step by Step Solution

1. Step 1: Write the proportion equation
   17,687.76 : 24,408.69 = 9,729.81 : x
2. Step 2: Convert to fraction form
   17,687.76/24,408.69 = 9,729.81/x
3. Step 3: Cross multiply
   17,687.76x = 24,408.69 × 9,729.81
4. Step 4: Simplify right side
   17,687.76x = 237,491,916.05
5. Step 5: Solve for x
   x = 237,491,916.05/17,687.76
6. Step 6: Final answer
   x = 13,426.91