Finding the Fourth Proportional to 9,036.14, 12,469.76 and 5,057.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,036.14 : 12,469.76 = 5,057.29 : x
2. Step 2: Convert to fraction form
   9,036.14/12,469.76 = 5,057.29/x
3. Step 3: Cross multiply
   9,036.14x = 12,469.76 × 5,057.29
4. Step 4: Simplify right side
   9,036.14x = 63,063,130.20
5. Step 5: Solve for x
   x = 63,063,130.20/9,036.14
6. Step 6: Final answer
   x = 6,978.99