Finding the Fourth Proportional to 12,469.20, 17,208.06 and 7,165.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,469.20 : 17,208.06 = 7,165.68 : x
2. Step 2: Convert to fraction form
   12,469.20/17,208.06 = 7,165.68/x
3. Step 3: Cross multiply
   12,469.20x = 17,208.06 × 7,165.68
4. Step 4: Simplify right side
   12,469.20x = 123,307,451.38
5. Step 5: Solve for x
   x = 123,307,451.38/12,469.20
6. Step 6: Final answer
   x = 9,888.96