Finding the Fourth Proportional to 12,538.32, 18,773.46 and 8,144.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538.32 : 18,773.46 = 8,144.88 : x
2. Step 2: Convert to fraction form
   12,538.32/18,773.46 = 8,144.88/x
3. Step 3: Cross multiply
   12,538.32x = 18,773.46 × 8,144.88
4. Step 4: Simplify right side
   12,538.32x = 152,907,578.88
5. Step 5: Solve for x
   x = 152,907,578.88/12,538.32
6. Step 6: Final answer
   x = 12,195.22