Finding the Fourth Proportional to 8,340.48, 12,506.52 and 3,408.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,340.48 : 12,506.52 = 3,408.12 : x
2. Step 2: Convert to fraction form
   8,340.48/12,506.52 = 3,408.12/x
3. Step 3: Cross multiply
   8,340.48x = 12,506.52 × 3,408.12
4. Step 4: Simplify right side
   8,340.48x = 42,623,720.94
5. Step 5: Solve for x
   x = 42,623,720.94/8,340.48
6. Step 6: Final answer
   x = 5,110.46