Finding the Fourth Proportional to 6,322.78, 8,725.43 and 3,528.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,322.78 : 8,725.43 = 3,528.28 : x
2. Step 2: Convert to fraction form
   6,322.78/8,725.43 = 3,528.28/x
3. Step 3: Cross multiply
   6,322.78x = 8,725.43 × 3,528.28
4. Step 4: Simplify right side
   6,322.78x = 30,785,760.16
5. Step 5: Solve for x
   x = 30,785,760.16/6,322.78
6. Step 6: Final answer
   x = 4,869.02