Finding the Fourth Proportional to 12,229.02, 18,339.69 and 5,208.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,229.02 : 18,339.69 = 5,208.96 : x
2. Step 2: Convert to fraction form
   12,229.02/18,339.69 = 5,208.96/x
3. Step 3: Cross multiply
   12,229.02x = 18,339.69 × 5,208.96
4. Step 4: Simplify right side
   12,229.02x = 95,530,711.62
5. Step 5: Solve for x
   x = 95,530,711.62/12,229.02
6. Step 6: Final answer
   x = 7,811.80