Finding the Fourth Proportional to 12,443.76, 18,630.72 and 8,048.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.76 : 18,630.72 = 8,048.16 : x
2. Step 2: Convert to fraction form
   12,443.76/18,630.72 = 8,048.16/x
3. Step 3: Cross multiply
   12,443.76x = 18,630.72 × 8,048.16
4. Step 4: Simplify right side
   12,443.76x = 149,943,015.48
5. Step 5: Solve for x
   x = 149,943,015.48/12,443.76
6. Step 6: Final answer
   x = 12,049.66