Finding the Fourth Proportional to 12,151.30, 18,234.18 and 8,003.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151.30 : 18,234.18 = 8,003.20 : x
2. Step 2: Convert to fraction form
   12,151.30/18,234.18 = 8,003.20/x
3. Step 3: Cross multiply
   12,151.30x = 18,234.18 × 8,003.20
4. Step 4: Simplify right side
   12,151.30x = 145,931,789.38
5. Step 5: Solve for x
   x = 145,931,789.38/12,151.30
6. Step 6: Final answer
   x = 12,009.56