Finding the Fourth Proportional to 5,625.69, 8,420.82 and 3,860.37

Step by Step Solution

1. Step 1: Write the proportion equation
   5,625.69 : 8,420.82 = 3,860.37 : x
2. Step 2: Convert to fraction form
   5,625.69/8,420.82 = 3,860.37/x
3. Step 3: Cross multiply
   5,625.69x = 8,420.82 × 3,860.37
4. Step 4: Simplify right side
   5,625.69x = 32,507,480.90
5. Step 5: Solve for x
   x = 32,507,480.90/5,625.69
6. Step 6: Final answer
   x = 5,778.40