Finding the Fourth Proportional to 5,665.78, 8,499.12 and 2,379.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,665.78 : 8,499.12 = 2,379.25 : x
2. Step 2: Convert to fraction form
   5,665.78/8,499.12 = 2,379.25/x
3. Step 3: Cross multiply
   5,665.78x = 8,499.12 × 2,379.25
4. Step 4: Simplify right side
   5,665.78x = 20,221,531.26
5. Step 5: Solve for x
   x = 20,221,531.26/5,665.78
6. Step 6: Final answer
   x = 3,569.06