Finding the Fourth Proportional to 3,952.72, 5,455.91 and 2,275.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,952.72 : 5,455.91 = 2,275.32 : x
2. Step 2: Convert to fraction form
   3,952.72/5,455.91 = 2,275.32/x
3. Step 3: Cross multiply
   3,952.72x = 5,455.91 × 2,275.32
4. Step 4: Simplify right side
   3,952.72x = 12,413,908.46
5. Step 5: Solve for x
   x = 12,413,908.46/3,952.72
6. Step 6: Final answer
   x = 3,140.60