Finding the Fourth Proportional to 5,404.80, 8,104.38 and 3,649.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.80 : 8,104.38 = 3,649.74 : x
2. Step 2: Convert to fraction form
   5,404.80/8,104.38 = 3,649.74/x
3. Step 3: Cross multiply
   5,404.80x = 8,104.38 × 3,649.74
4. Step 4: Simplify right side
   5,404.80x = 29,578,879.86
5. Step 5: Solve for x
   x = 29,578,879.86/5,404.80
6. Step 6: Final answer
   x = 5,472.71