Finding the Fourth Proportional to 3,993.42, 5,991.39 and 3,579.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.42 : 5,991.39 = 3,579.96 : x
2. Step 2: Convert to fraction form
   3,993.42/5,991.39 = 3,579.96/x
3. Step 3: Cross multiply
   3,993.42x = 5,991.39 × 3,579.96
4. Step 4: Simplify right side
   3,993.42x = 21,448,936.54
5. Step 5: Solve for x
   x = 21,448,936.54/3,993.42
6. Step 6: Final answer
   x = 5,371.07