Finding the Fourth Proportional to 6,396.86, 8,825.82 and 4,039.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,396.86 : 8,825.82 = 4,039.76 : x
2. Step 2: Convert to fraction form
   6,396.86/8,825.82 = 4,039.76/x
3. Step 3: Cross multiply
   6,396.86x = 8,825.82 × 4,039.76
4. Step 4: Simplify right side
   6,396.86x = 35,654,194.60
5. Step 5: Solve for x
   x = 35,654,194.60/6,396.86
6. Step 6: Final answer
   x = 5,573.70