Finding the Fourth Proportional to 6,878.91, 10,315.77 and 2,719.83

Step by Step Solution

1. Step 1: Write the proportion equation
   6,878.91 : 10,315.77 = 2,719.83 : x
2. Step 2: Convert to fraction form
   6,878.91/10,315.77 = 2,719.83/x
3. Step 3: Cross multiply
   6,878.91x = 10,315.77 × 2,719.83
4. Step 4: Simplify right side
   6,878.91x = 28,057,140.72
5. Step 5: Solve for x
   x = 28,057,140.72/6,878.91
6. Step 6: Final answer
   x = 4,078.72