Finding the Fourth Proportional to 8,155.90, 12,229.98 and 2,607.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.90 : 12,229.98 = 2,607.94 : x
2. Step 2: Convert to fraction form
   8,155.90/12,229.98 = 2,607.94/x
3. Step 3: Cross multiply
   8,155.90x = 12,229.98 × 2,607.94
4. Step 4: Simplify right side
   8,155.90x = 31,895,054.04
5. Step 5: Solve for x
   x = 31,895,054.04/8,155.90
6. Step 6: Final answer
   x = 3,910.67