Finding the Fourth Proportional to 10,234.52, 14,129.34 and 8,212.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,234.52 : 14,129.34 = 8,212.76 : x
2. Step 2: Convert to fraction form
   10,234.52/14,129.34 = 8,212.76/x
3. Step 3: Cross multiply
   10,234.52x = 14,129.34 × 8,212.76
4. Step 4: Simplify right side
   10,234.52x = 116,040,878.38
5. Step 5: Solve for x
   x = 116,040,878.38/10,234.52
6. Step 6: Final answer
   x = 11,338.18