Finding the Fourth Proportional to 8,928.30, 12,320.60 and 4,949.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,928.30 : 12,320.60 = 4,949.37 : x
2. Step 2: Convert to fraction form
   8,928.30/12,320.60 = 4,949.37/x
3. Step 3: Cross multiply
   8,928.30x = 12,320.60 × 4,949.37
4. Step 4: Simplify right side
   8,928.30x = 60,979,183.28
5. Step 5: Solve for x
   x = 60,979,183.28/8,928.30
6. Step 6: Final answer
   x = 6,829.88