Finding the Fourth Proportional to 9,057.99, 12,499.47 and 5,079.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.99 : 12,499.47 = 5,079.02 : x
2. Step 2: Convert to fraction form
   9,057.99/12,499.47 = 5,079.02/x
3. Step 3: Cross multiply
   9,057.99x = 12,499.47 × 5,079.02
4. Step 4: Simplify right side
   9,057.99x = 63,484,995.62
5. Step 5: Solve for x
   x = 63,484,995.62/9,057.99
6. Step 6: Final answer
   x = 7,008.73