Finding the Fourth Proportional to 8,807.80, 13,199.86 and 3,255.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,807.80 : 13,199.86 = 3,255.86 : x
2. Step 2: Convert to fraction form
   8,807.80/13,199.86 = 3,255.86/x
3. Step 3: Cross multiply
   8,807.80x = 13,199.86 × 3,255.86
4. Step 4: Simplify right side
   8,807.80x = 42,976,896.18
5. Step 5: Solve for x
   x = 42,976,896.18/8,807.80
6. Step 6: Final answer
   x = 4,879.41