Finding the Fourth Proportional to 8,796.72, 12,139.12 and 5,257.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,796.72 : 12,139.12 = 5,257.84 : x
2. Step 2: Convert to fraction form
   8,796.72/12,139.12 = 5,257.84/x
3. Step 3: Cross multiply
   8,796.72x = 12,139.12 × 5,257.84
4. Step 4: Simplify right side
   8,796.72x = 63,825,550.70
5. Step 5: Solve for x
   x = 63,825,550.70/8,796.72
6. Step 6: Final answer
   x = 7,255.61