Finding the Fourth Proportional to 12,658.78, 17,469.06 and 7,069.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,658.78 : 17,469.06 = 7,069.78 : x
2. Step 2: Convert to fraction form
   12,658.78/17,469.06 = 7,069.78/x
3. Step 3: Cross multiply
   12,658.78x = 17,469.06 × 7,069.78
4. Step 4: Simplify right side
   12,658.78x = 123,502,411.01
5. Step 5: Solve for x
   x = 123,502,411.01/12,658.78
6. Step 6: Final answer
   x = 9,756.26