Finding the Fourth Proportional to 3,993.21, 5,510.63 and 2,225.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.21 : 5,510.63 = 2,225.16 : x
2. Step 2: Convert to fraction form
   3,993.21/5,510.63 = 2,225.16/x
3. Step 3: Cross multiply
   3,993.21x = 5,510.63 × 2,225.16
4. Step 4: Simplify right side
   3,993.21x = 12,262,033.45
5. Step 5: Solve for x
   x = 12,262,033.45/3,993.21
6. Step 6: Final answer
   x = 3,070.72