Finding the Fourth Proportional to 8,879.72, 12,253.55 and 4,900.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,879.72 : 12,253.55 = 4,900.59 : x
2. Step 2: Convert to fraction form
   8,879.72/12,253.55 = 4,900.59/x
3. Step 3: Cross multiply
   8,879.72x = 12,253.55 × 4,900.59
4. Step 4: Simplify right side
   8,879.72x = 60,049,600.09
5. Step 5: Solve for x
   x = 60,049,600.09/8,879.72
6. Step 6: Final answer
   x = 6,762.56