Finding the Fourth Proportional to 8,280.33, 12,408.42 and 3,839.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.33 : 12,408.42 = 3,839.36 : x
2. Step 2: Convert to fraction form
   8,280.33/12,408.42 = 3,839.36/x
3. Step 3: Cross multiply
   8,280.33x = 12,408.42 × 3,839.36
4. Step 4: Simplify right side
   8,280.33x = 47,640,329.37
5. Step 5: Solve for x
   x = 47,640,329.37/8,280.33
6. Step 6: Final answer
   x = 5,753.43