Finding the Fourth Proportional to 6,081.48, 9,115.20 and 3,155.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,081.48 : 9,115.20 = 3,155.76 : x
2. Step 2: Convert to fraction form
   6,081.48/9,115.20 = 3,155.76/x
3. Step 3: Cross multiply
   6,081.48x = 9,115.20 × 3,155.76
4. Step 4: Simplify right side
   6,081.48x = 28,765,383.55
5. Step 5: Solve for x
   x = 28,765,383.55/6,081.48
6. Step 6: Final answer
   x = 4,730.00