Finding the Fourth Proportional to 12,265.69, 16,928.86 and 7,229.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,265.69 : 16,928.86 = 7,229.61 : x
2. Step 2: Convert to fraction form
   12,265.69/16,928.86 = 7,229.61/x
3. Step 3: Cross multiply
   12,265.69x = 16,928.86 × 7,229.61
4. Step 4: Simplify right side
   12,265.69x = 122,389,078.31
5. Step 5: Solve for x
   x = 122,389,078.31/12,265.69
6. Step 6: Final answer
   x = 9,978.17