Finding the Fourth Proportional to 3,833.12, 5,283.71 and 3,205.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,833.12 : 5,283.71 = 3,205.72 : x
2. Step 2: Convert to fraction form
   3,833.12/5,283.71 = 3,205.72/x
3. Step 3: Cross multiply
   3,833.12x = 5,283.71 × 3,205.72
4. Step 4: Simplify right side
   3,833.12x = 16,938,094.82
5. Step 5: Solve for x
   x = 16,938,094.82/3,833.12
6. Step 6: Final answer
   x = 4,418.88