Finding the Fourth Proportional to 4,964.76, 6,854.58 and 3,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,964.76 : 6,854.58 = 3,078.72 : x
2. Step 2: Convert to fraction form
   4,964.76/6,854.58 = 3,078.72/x
3. Step 3: Cross multiply
   4,964.76x = 6,854.58 × 3,078.72
4. Step 4: Simplify right side
   4,964.76x = 21,103,332.54
5. Step 5: Solve for x
   x = 21,103,332.54/4,964.76
6. Step 6: Final answer
   x = 4,250.62