Finding the Fourth Proportional to 3,938.33, 5,429.86 and 3,227.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.33 : 5,429.86 = 3,227.56 : x
2. Step 2: Convert to fraction form
   3,938.33/5,429.86 = 3,227.56/x
3. Step 3: Cross multiply
   3,938.33x = 5,429.86 × 3,227.56
4. Step 4: Simplify right side
   3,938.33x = 17,525,177.30
5. Step 5: Solve for x
   x = 17,525,177.30/3,938.33
6. Step 6: Final answer
   x = 4,449.90