Finding the Fourth Proportional to 3,105.38, 4,649.78 and 2,613.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,105.38 : 4,649.78 = 2,613.30 : x
2. Step 2: Convert to fraction form
   3,105.38/4,649.78 = 2,613.30/x
3. Step 3: Cross multiply
   3,105.38x = 4,649.78 × 2,613.30
4. Step 4: Simplify right side
   3,105.38x = 12,151,270.07
5. Step 5: Solve for x
   x = 12,151,270.07/3,105.38
6. Step 6: Final answer
   x = 3,912.97