Finding the Fourth Proportional to 3,970.89, 5,952.69 and 2,123.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.89 : 5,952.69 = 2,123.28 : x
2. Step 2: Convert to fraction form
   3,970.89/5,952.69 = 2,123.28/x
3. Step 3: Cross multiply
   3,970.89x = 5,952.69 × 2,123.28
4. Step 4: Simplify right side
   3,970.89x = 12,639,227.62
5. Step 5: Solve for x
   x = 12,639,227.62/3,970.89
6. Step 6: Final answer
   x = 3,182.97