Finding the Fourth Proportional to 12,672.32, 17,488.16 and 7,083.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,672.32 : 17,488.16 = 7,083.20 : x
2. Step 2: Convert to fraction form
   12,672.32/17,488.16 = 7,083.20/x
3. Step 3: Cross multiply
   12,672.32x = 17,488.16 × 7,083.20
4. Step 4: Simplify right side
   12,672.32x = 123,872,134.91
5. Step 5: Solve for x
   x = 123,872,134.91/12,672.32
6. Step 6: Final answer
   x = 9,775.02