Finding the Fourth Proportional to 12,658.88, 17,469.60 and 7,069.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,658.88 : 17,469.60 = 7,069.76 : x
2. Step 2: Convert to fraction form
   12,658.88/17,469.60 = 7,069.76/x
3. Step 3: Cross multiply
   12,658.88x = 17,469.60 × 7,069.76
4. Step 4: Simplify right side
   12,658.88x = 123,505,879.30
5. Step 5: Solve for x
   x = 123,505,879.30/12,658.88
6. Step 6: Final answer
   x = 9,756.46