Finding the Fourth Proportional to 12,189.24, 18,284.49 and 3,424.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,189.24 : 18,284.49 = 3,424.83 : x
2. Step 2: Convert to fraction form
   12,189.24/18,284.49 = 3,424.83/x
3. Step 3: Cross multiply
   12,189.24x = 18,284.49 × 3,424.83
4. Step 4: Simplify right side
   12,189.24x = 62,621,269.89
5. Step 5: Solve for x
   x = 62,621,269.89/12,189.24
6. Step 6: Final answer
   x = 5,137.42