Finding the Fourth Proportional to 3,421.33, 5,123.24 and 2,729

Step by Step Solution

1. Step 1: Write the proportion equation
   3,421.33 : 5,123.24 = 2,729 : x
2. Step 2: Convert to fraction form
   3,421.33/5,123.24 = 2,729/x
3. Step 3: Cross multiply
   3,421.33x = 5,123.24 × 2,729
4. Step 4: Simplify right side
   3,421.33x = 13,981,321.96
5. Step 5: Solve for x
   x = 13,981,321.96/3,421.33
6. Step 6: Final answer
   x = 4,086.52