Finding the Fourth Proportional to 3,978.33, 5,490.22 and 2,210.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.33 : 5,490.22 = 2,210.08 : x
2. Step 2: Convert to fraction form
   3,978.33/5,490.22 = 2,210.08/x
3. Step 3: Cross multiply
   3,978.33x = 5,490.22 × 2,210.08
4. Step 4: Simplify right side
   3,978.33x = 12,133,797.97
5. Step 5: Solve for x
   x = 12,133,797.97/3,978.33
6. Step 6: Final answer
   x = 3,049.97