Finding the Fourth Proportional to 3,965.46, 5,482.08 and 3,928.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.46 : 5,482.08 = 3,928.10 : x
2. Step 2: Convert to fraction form
   3,965.46/5,482.08 = 3,928.10/x
3. Step 3: Cross multiply
   3,965.46x = 5,482.08 × 3,928.10
4. Step 4: Simplify right side
   3,965.46x = 21,534,131.04
5. Step 5: Solve for x
   x = 21,534,131.04/3,965.46
6. Step 6: Final answer
   x = 5,430.43