Finding the Fourth Proportional to 10,212.42, 15,249.45 and 8,108.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,212.42 : 15,249.45 = 8,108.82 : x
2. Step 2: Convert to fraction form
   10,212.42/15,249.45 = 8,108.82/x
3. Step 3: Cross multiply
   10,212.42x = 15,249.45 × 8,108.82
4. Step 4: Simplify right side
   10,212.42x = 123,655,045.15
5. Step 5: Solve for x
   x = 123,655,045.15/10,212.42
6. Step 6: Final answer
   x = 12,108.30