Finding the Fourth Proportional to 5,872.69, 8,104.69 and 3,879.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,872.69 : 8,104.69 = 3,879.76 : x
2. Step 2: Convert to fraction form
   5,872.69/8,104.69 = 3,879.76/x
3. Step 3: Cross multiply
   5,872.69x = 8,104.69 × 3,879.76
4. Step 4: Simplify right side
   5,872.69x = 31,444,211.55
5. Step 5: Solve for x
   x = 31,444,211.55/5,872.69
6. Step 6: Final answer
   x = 5,354.31