Finding the Fourth Proportional to 13,360.15, 18,436.93 and 7,391.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,360.15 : 18,436.93 = 7,391.69 : x
2. Step 2: Convert to fraction form
   13,360.15/18,436.93 = 7,391.69/x
3. Step 3: Cross multiply
   13,360.15x = 18,436.93 × 7,391.69
4. Step 4: Simplify right side
   13,360.15x = 136,280,098.72
5. Step 5: Solve for x
   x = 136,280,098.72/13,360.15
6. Step 6: Final answer
   x = 10,200.49