Finding the Fourth Proportional to 3,896.72, 5,376.12 and 2,240.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,896.72 : 5,376.12 = 2,240.72 : x
2. Step 2: Convert to fraction form
   3,896.72/5,376.12 = 2,240.72/x
3. Step 3: Cross multiply
   3,896.72x = 5,376.12 × 2,240.72
4. Step 4: Simplify right side
   3,896.72x = 12,046,379.61
5. Step 5: Solve for x
   x = 12,046,379.61/3,896.72
6. Step 6: Final answer
   x = 3,091.42