Finding the Fourth Proportional to 13,359.33, 18,436.16 and 7,391.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,359.33 : 18,436.16 = 7,391.42 : x
2. Step 2: Convert to fraction form
   13,359.33/18,436.16 = 7,391.42/x
3. Step 3: Cross multiply
   13,359.33x = 18,436.16 × 7,391.42
4. Step 4: Simplify right side
   13,359.33x = 136,269,401.75
5. Step 5: Solve for x
   x = 136,269,401.75/13,359.33
6. Step 6: Final answer
   x = 10,200.32