Finding the Fourth Proportional to 8,626.09, 12,940.37 and 3,078.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,626.09 : 12,940.37 = 3,078.27 : x
2. Step 2: Convert to fraction form
   8,626.09/12,940.37 = 3,078.27/x
3. Step 3: Cross multiply
   8,626.09x = 12,940.37 × 3,078.27
4. Step 4: Simplify right side
   8,626.09x = 39,833,900.39
5. Step 5: Solve for x
   x = 39,833,900.39/8,626.09
6. Step 6: Final answer
   x = 4,617.84