Finding the Fourth Proportional to 10,819.41, 16,231.31 and 4,155.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,819.41 : 16,231.31 = 4,155.63 : x
2. Step 2: Convert to fraction form
   10,819.41/16,231.31 = 4,155.63/x
3. Step 3: Cross multiply
   10,819.41x = 16,231.31 × 4,155.63
4. Step 4: Simplify right side
   10,819.41x = 67,451,318.78
5. Step 5: Solve for x
   x = 67,451,318.78/10,819.41
6. Step 6: Final answer
   x = 6,234.29