Finding the Fourth Proportional to 13,517.38, 18,653.78 and 7,549.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,517.38 : 18,653.78 = 7,549.13 : x
2. Step 2: Convert to fraction form
   13,517.38/18,653.78 = 7,549.13/x
3. Step 3: Cross multiply
   13,517.38x = 18,653.78 × 7,549.13
4. Step 4: Simplify right side
   13,517.38x = 140,819,772.47
5. Step 5: Solve for x
   x = 140,819,772.47/13,517.38
6. Step 6: Final answer
   x = 10,417.69