Finding the Fourth Proportional to 12,212.24, 18,294.72 and 8,039.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,212.24 : 18,294.72 = 8,039.72 : x
2. Step 2: Convert to fraction form
   12,212.24/18,294.72 = 8,039.72/x
3. Step 3: Cross multiply
   12,212.24x = 18,294.72 × 8,039.72
4. Step 4: Simplify right side
   12,212.24x = 147,084,426.28
5. Step 5: Solve for x
   x = 147,084,426.28/12,212.24
6. Step 6: Final answer
   x = 12,044.02