Finding the Fourth Proportional to 3,993.30, 5,510.53 and 2,291.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.30 : 5,510.53 = 2,291.72 : x
2. Step 2: Convert to fraction form
   3,993.30/5,510.53 = 2,291.72/x
3. Step 3: Cross multiply
   3,993.30x = 5,510.53 × 2,291.72
4. Step 4: Simplify right side
   3,993.30x = 12,628,582.62
5. Step 5: Solve for x
   x = 12,628,582.62/3,993.30
6. Step 6: Final answer
   x = 3,162.44