Finding the Fourth Proportional to 3,992.80, 5,510.19 and 2,200.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,992.80 : 5,510.19 = 2,200.18 : x
2. Step 2: Convert to fraction form
   3,992.80/5,510.19 = 2,200.18/x
3. Step 3: Cross multiply
   3,992.80x = 5,510.19 × 2,200.18
4. Step 4: Simplify right side
   3,992.80x = 12,123,409.83
5. Step 5: Solve for x
   x = 12,123,409.83/3,992.80
6. Step 6: Final answer
   x = 3,036.32