Finding the Fourth Proportional to 12,079.72, 18,104.94 and 5,504.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,079.72 : 18,104.94 = 5,504.20 : x
2. Step 2: Convert to fraction form
   12,079.72/18,104.94 = 5,504.20/x
3. Step 3: Cross multiply
   12,079.72x = 18,104.94 × 5,504.20
4. Step 4: Simplify right side
   12,079.72x = 99,653,210.75
5. Step 5: Solve for x
   x = 99,653,210.75/12,079.72
6. Step 6: Final answer
   x = 8,249.63