Finding the Fourth Proportional to 3,993.20, 5,510.72 and 2,224.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.20 : 5,510.72 = 2,224.91 : x
2. Step 2: Convert to fraction form
   3,993.20/5,510.72 = 2,224.91/x
3. Step 3: Cross multiply
   3,993.20x = 5,510.72 × 2,224.91
4. Step 4: Simplify right side
   3,993.20x = 12,260,844.91
5. Step 5: Solve for x
   x = 12,260,844.91/3,993.20
6. Step 6: Final answer
   x = 3,070.43