Finding the Fourth Proportional to 13,359.98, 18,436.68 and 7,391.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,359.98 : 18,436.68 = 7,391.52 : x
2. Step 2: Convert to fraction form
   13,359.98/18,436.68 = 7,391.52/x
3. Step 3: Cross multiply
   13,359.98x = 18,436.68 × 7,391.52
4. Step 4: Simplify right side
   13,359.98x = 136,275,088.95
5. Step 5: Solve for x
   x = 136,275,088.95/13,359.98
6. Step 6: Final answer
   x = 10,200.24