Finding the Fourth Proportional to 10,156.68, 15,231.78 and 3,229.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,156.68 : 15,231.78 = 3,229.56 : x
2. Step 2: Convert to fraction form
   10,156.68/15,231.78 = 3,229.56/x
3. Step 3: Cross multiply
   10,156.68x = 15,231.78 × 3,229.56
4. Step 4: Simplify right side
   10,156.68x = 49,191,947.42
5. Step 5: Solve for x
   x = 49,191,947.42/10,156.68
6. Step 6: Final answer
   x = 4,843.31