Finding the Fourth Proportional to 10,154.38, 15,231.42 and 2,759

Step by Step Solution

1. Step 1: Write the proportion equation
   10,154.38 : 15,231.42 = 2,759 : x
2. Step 2: Convert to fraction form
   10,154.38/15,231.42 = 2,759/x
3. Step 3: Cross multiply
   10,154.38x = 15,231.42 × 2,759
4. Step 4: Simplify right side
   10,154.38x = 42,023,487.78
5. Step 5: Solve for x
   x = 42,023,487.78/10,154.38
6. Step 6: Final answer
   x = 4,138.46