Finding the Fourth Proportional to 3,932.16, 5,449.75 and 3,858.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932.16 : 5,449.75 = 3,858.35 : x
2. Step 2: Convert to fraction form
   3,932.16/5,449.75 = 3,858.35/x
3. Step 3: Cross multiply
   3,932.16x = 5,449.75 × 3,858.35
4. Step 4: Simplify right side
   3,932.16x = 21,027,036.67
5. Step 5: Solve for x
   x = 21,027,036.67/3,932.16
6. Step 6: Final answer
   x = 5,347.45