Finding the Fourth Proportional to 3,879.18, 5,786.22 and 3,560.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,879.18 : 5,786.22 = 3,560.76 : x
2. Step 2: Convert to fraction form
   3,879.18/5,786.22 = 3,560.76/x
3. Step 3: Cross multiply
   3,879.18x = 5,786.22 × 3,560.76
4. Step 4: Simplify right side
   3,879.18x = 20,603,340.73
5. Step 5: Solve for x
   x = 20,603,340.73/3,879.18
6. Step 6: Final answer
   x = 5,311.26