Finding the Fourth Proportional to 3,912.27, 5,860.96 and 3,386.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,912.27 : 5,860.96 = 3,386.78 : x
2. Step 2: Convert to fraction form
   3,912.27/5,860.96 = 3,386.78/x
3. Step 3: Cross multiply
   3,912.27x = 5,860.96 × 3,386.78
4. Step 4: Simplify right side
   3,912.27x = 19,849,766.32
5. Step 5: Solve for x
   x = 19,849,766.32/3,912.27
6. Step 6: Final answer
   x = 5,073.73