Finding the Fourth Proportional to 3,979.92, 5,449.83 and 3,823.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979.92 : 5,449.83 = 3,823.07 : x
2. Step 2: Convert to fraction form
   3,979.92/5,449.83 = 3,823.07/x
3. Step 3: Cross multiply
   3,979.92x = 5,449.83 × 3,823.07
4. Step 4: Simplify right side
   3,979.92x = 20,835,054.33
5. Step 5: Solve for x
   x = 20,835,054.33/3,979.92
6. Step 6: Final answer
   x = 5,235.04