Finding the Fourth Proportional to 12,168.63, 18,259.43 and 5,243.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168.63 : 18,259.43 = 5,243.67 : x
2. Step 2: Convert to fraction form
   12,168.63/18,259.43 = 5,243.67/x
3. Step 3: Cross multiply
   12,168.63x = 18,259.43 × 5,243.67
4. Step 4: Simplify right side
   12,168.63x = 95,746,399.09
5. Step 5: Solve for x
   x = 95,746,399.09/12,168.63
6. Step 6: Final answer
   x = 7,868.30