Finding the Fourth Proportional to 12,144.52, 18,203.82 and 8,671.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,144.52 : 18,203.82 = 8,671.24 : x
2. Step 2: Convert to fraction form
   12,144.52/18,203.82 = 8,671.24/x
3. Step 3: Cross multiply
   12,144.52x = 18,203.82 × 8,671.24
4. Step 4: Simplify right side
   12,144.52x = 157,849,692.14
5. Step 5: Solve for x
   x = 157,849,692.14/12,144.52
6. Step 6: Final answer
   x = 12,997.61