Finding the Fourth Proportional to 12,265.50, 16,928.60 and 7,229.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,265.50 : 16,928.60 = 7,229.42 : x
2. Step 2: Convert to fraction form
   12,265.50/16,928.60 = 7,229.42/x
3. Step 3: Cross multiply
   12,265.50x = 16,928.60 × 7,229.42
4. Step 4: Simplify right side
   12,265.50x = 122,383,965.59
5. Step 5: Solve for x
   x = 122,383,965.59/12,265.50
6. Step 6: Final answer
   x = 9,977.90