Finding the Fourth Proportional to 12,164.82, 18,249.10 and 5,144.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,164.82 : 18,249.10 = 5,144.85 : x
2. Step 2: Convert to fraction form
   12,164.82/18,249.10 = 5,144.85/x
3. Step 3: Cross multiply
   12,164.82x = 18,249.10 × 5,144.85
4. Step 4: Simplify right side
   12,164.82x = 93,888,869.27
5. Step 5: Solve for x
   x = 93,888,869.27/12,164.82
6. Step 6: Final answer
   x = 7,718.07