Finding the Fourth Proportional to 3,906.12, 5,390.42 and 2,227.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.12 : 5,390.42 = 2,227.52 : x
2. Step 2: Convert to fraction form
   3,906.12/5,390.42 = 2,227.52/x
3. Step 3: Cross multiply
   3,906.12x = 5,390.42 × 2,227.52
4. Step 4: Simplify right side
   3,906.12x = 12,007,268.36
5. Step 5: Solve for x
   x = 12,007,268.36/3,906.12
6. Step 6: Final answer
   x = 3,073.96