Finding the Fourth Proportional to 3,945.48, 5,445.27 and 3,281.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.48 : 5,445.27 = 3,281.19 : x
2. Step 2: Convert to fraction form
   3,945.48/5,445.27 = 3,281.19/x
3. Step 3: Cross multiply
   3,945.48x = 5,445.27 × 3,281.19
4. Step 4: Simplify right side
   3,945.48x = 17,866,965.47
5. Step 5: Solve for x
   x = 17,866,965.47/3,945.48
6. Step 6: Final answer
   x = 4,528.46