Finding the Fourth Proportional to 6,259.86, 8,639.70 and 3,608.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,259.86 : 8,639.70 = 3,608.82 : x
2. Step 2: Convert to fraction form
   6,259.86/8,639.70 = 3,608.82/x
3. Step 3: Cross multiply
   6,259.86x = 8,639.70 × 3,608.82
4. Step 4: Simplify right side
   6,259.86x = 31,179,122.15
5. Step 5: Solve for x
   x = 31,179,122.15/6,259.86
6. Step 6: Final answer
   x = 4,980.80