Finding the Fourth Proportional to 17,677.98, 24,399.82 and 10,128.66

Step by Step Solution

1. Step 1: Write the proportion equation
   17,677.98 : 24,399.82 = 10,128.66 : x
2. Step 2: Convert to fraction form
   17,677.98/24,399.82 = 10,128.66/x
3. Step 3: Cross multiply
   17,677.98x = 24,399.82 × 10,128.66
4. Step 4: Simplify right side
   17,677.98x = 247,137,480.84
5. Step 5: Solve for x
   x = 247,137,480.84/17,677.98
6. Step 6: Final answer
   x = 13,979.96