Finding the Fourth Proportional to 2,664.54, 3,970.02 and 2,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,664.54 : 3,970.02 = 2,515.50 : x
2. Step 2: Convert to fraction form
   2,664.54/3,970.02 = 2,515.50/x
3. Step 3: Cross multiply
   2,664.54x = 3,970.02 × 2,515.50
4. Step 4: Simplify right side
   2,664.54x = 9,986,585.31
5. Step 5: Solve for x
   x = 9,986,585.31/2,664.54
6. Step 6: Final answer
   x = 3,747.96