Finding the Fourth Proportional to 7,665.92, 11,499.16 and 2,986.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,665.92 : 11,499.16 = 2,986.28 : x
2. Step 2: Convert to fraction form
   7,665.92/11,499.16 = 2,986.28/x
3. Step 3: Cross multiply
   7,665.92x = 11,499.16 × 2,986.28
4. Step 4: Simplify right side
   7,665.92x = 34,339,711.52
5. Step 5: Solve for x
   x = 34,339,711.52/7,665.92
6. Step 6: Final answer
   x = 4,479.53