Finding the Fourth Proportional to 17,618.78, 24,314.25 and 9,660.53

Step by Step Solution

1. Step 1: Write the proportion equation
   17,618.78 : 24,314.25 = 9,660.53 : x
2. Step 2: Convert to fraction form
   17,618.78/24,314.25 = 9,660.53/x
3. Step 3: Cross multiply
   17,618.78x = 24,314.25 × 9,660.53
4. Step 4: Simplify right side
   17,618.78x = 234,888,541.55
5. Step 5: Solve for x
   x = 234,888,541.55/17,618.78
6. Step 6: Final answer
   x = 13,331.71