Finding the Fourth Proportional to 3,930.50, 5,425.31 and 2,533.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.50 : 5,425.31 = 2,533.25 : x
2. Step 2: Convert to fraction form
   3,930.50/5,425.31 = 2,533.25/x
3. Step 3: Cross multiply
   3,930.50x = 5,425.31 × 2,533.25
4. Step 4: Simplify right side
   3,930.50x = 13,743,653.89
5. Step 5: Solve for x
   x = 13,743,653.89/3,930.50
6. Step 6: Final answer
   x = 3,496.67