Finding the Fourth Proportional to 9,036.15, 12,469.59 and 5,057.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,036.15 : 12,469.59 = 5,057.16 : x
2. Step 2: Convert to fraction form
   9,036.15/12,469.59 = 5,057.16/x
3. Step 3: Cross multiply
   9,036.15x = 12,469.59 × 5,057.16
4. Step 4: Simplify right side
   9,036.15x = 63,060,711.76
5. Step 5: Solve for x
   x = 63,060,711.76/9,036.15
6. Step 6: Final answer
   x = 6,978.71