Finding the Fourth Proportional to 10,171.96, 15,255.55 and 5,731.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,171.96 : 15,255.55 = 5,731.56 : x
2. Step 2: Convert to fraction form
   10,171.96/15,255.55 = 5,731.56/x
3. Step 3: Cross multiply
   10,171.96x = 15,255.55 × 5,731.56
4. Step 4: Simplify right side
   10,171.96x = 87,438,100.16
5. Step 5: Solve for x
   x = 87,438,100.16/10,171.96
6. Step 6: Final answer
   x = 8,595.99