Finding the Fourth Proportional to 7,351.33, 10,144.71 and 3,994.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,351.33 : 10,144.71 = 3,994.20 : x
2. Step 2: Convert to fraction form
   7,351.33/10,144.71 = 3,994.20/x
3. Step 3: Cross multiply
   7,351.33x = 10,144.71 × 3,994.20
4. Step 4: Simplify right side
   7,351.33x = 40,519,949.96
5. Step 5: Solve for x
   x = 40,519,949.96/7,351.33
6. Step 6: Final answer
   x = 5,511.92