Finding the Fourth Proportional to 12,074.88, 18,111.90 and 8,151.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,074.88 : 18,111.90 = 8,151.92 : x
2. Step 2: Convert to fraction form
   12,074.88/18,111.90 = 8,151.92/x
3. Step 3: Cross multiply
   12,074.88x = 18,111.90 × 8,151.92
4. Step 4: Simplify right side
   12,074.88x = 147,646,759.85
5. Step 5: Solve for x
   x = 147,646,759.85/12,074.88
6. Step 6: Final answer
   x = 12,227.60