Finding the Fourth Proportional to 6,322.43, 8,724.78 and 3,489.77

Step by Step Solution

1. Step 1: Write the proportion equation
   6,322.43 : 8,724.78 = 3,489.77 : x
2. Step 2: Convert to fraction form
   6,322.43/8,724.78 = 3,489.77/x
3. Step 3: Cross multiply
   6,322.43x = 8,724.78 × 3,489.77
4. Step 4: Simplify right side
   6,322.43x = 30,447,431.88
5. Step 5: Solve for x
   x = 30,447,431.88/6,322.43
6. Step 6: Final answer
   x = 4,815.78