Finding the Fourth Proportional to 17,677.89, 24,395.57 and 9,720.63

Step by Step Solution

1. Step 1: Write the proportion equation
   17,677.89 : 24,395.57 = 9,720.63 : x
2. Step 2: Convert to fraction form
   17,677.89/24,395.57 = 9,720.63/x
3. Step 3: Cross multiply
   17,677.89x = 24,395.57 × 9,720.63
4. Step 4: Simplify right side
   17,677.89x = 237,140,211.93
5. Step 5: Solve for x
   x = 237,140,211.93/17,677.89
6. Step 6: Final answer
   x = 13,414.51