Finding the Fourth Proportional to 6,123.28, 8,450.16 and 3,328.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,123.28 : 8,450.16 = 3,328.72 : x
2. Step 2: Convert to fraction form
   6,123.28/8,450.16 = 3,328.72/x
3. Step 3: Cross multiply
   6,123.28x = 8,450.16 × 3,328.72
4. Step 4: Simplify right side
   6,123.28x = 28,128,216.60
5. Step 5: Solve for x
   x = 28,128,216.60/6,123.28
6. Step 6: Final answer
   x = 4,593.65