Finding the Fourth Proportional to 8,797.12, 12,139.45 and 5,020.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,797.12 : 12,139.45 = 5,020.45 : x
2. Step 2: Convert to fraction form
   8,797.12/12,139.45 = 5,020.45/x
3. Step 3: Cross multiply
   8,797.12x = 12,139.45 × 5,020.45
4. Step 4: Simplify right side
   8,797.12x = 60,945,501.75
5. Step 5: Solve for x
   x = 60,945,501.75/8,797.12
6. Step 6: Final answer
   x = 6,927.89