Finding the Fourth Proportional to 6,978.87, 10,469.84 and 3,863.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.87 : 10,469.84 = 3,863.42 : x
2. Step 2: Convert to fraction form
   6,978.87/10,469.84 = 3,863.42/x
3. Step 3: Cross multiply
   6,978.87x = 10,469.84 × 3,863.42
4. Step 4: Simplify right side
   6,978.87x = 40,449,317.59
5. Step 5: Solve for x
   x = 40,449,317.59/6,978.87
6. Step 6: Final answer
   x = 5,795.97