Finding the Fourth Proportional to 3,994.28, 5,982.18 and 3,855.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,994.28 : 5,982.18 = 3,855.88 : x
2. Step 2: Convert to fraction form
   3,994.28/5,982.18 = 3,855.88/x
3. Step 3: Cross multiply
   3,994.28x = 5,982.18 × 3,855.88
4. Step 4: Simplify right side
   3,994.28x = 23,066,568.22
5. Step 5: Solve for x
   x = 23,066,568.22/3,994.28
6. Step 6: Final answer
   x = 5,774.90