Finding the Fourth Proportional to 3,976.30, 5,489.82 and 2,560.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.30 : 5,489.82 = 2,560.52 : x
2. Step 2: Convert to fraction form
   3,976.30/5,489.82 = 2,560.52/x
3. Step 3: Cross multiply
   3,976.30x = 5,489.82 × 2,560.52
4. Step 4: Simplify right side
   3,976.30x = 14,056,793.91
5. Step 5: Solve for x
   x = 14,056,793.91/3,976.30
6. Step 6: Final answer
   x = 3,535.14