Finding the Fourth Proportional to 3,933.83, 5,428.37 and 2,441.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,933.83 : 5,428.37 = 2,441.21 : x
2. Step 2: Convert to fraction form
   3,933.83/5,428.37 = 2,441.21/x
3. Step 3: Cross multiply
   3,933.83x = 5,428.37 × 2,441.21
4. Step 4: Simplify right side
   3,933.83x = 13,251,751.78
5. Step 5: Solve for x
   x = 13,251,751.78/3,933.83
6. Step 6: Final answer
   x = 3,368.66