Finding the Fourth Proportional to 8,148.72, 12,223.12 and 1,992.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,148.72 : 12,223.12 = 1,992.72 : x
2. Step 2: Convert to fraction form
   8,148.72/12,223.12 = 1,992.72/x
3. Step 3: Cross multiply
   8,148.72x = 12,223.12 × 1,992.72
4. Step 4: Simplify right side
   8,148.72x = 24,357,255.69
5. Step 5: Solve for x
   x = 24,357,255.69/8,148.72
6. Step 6: Final answer
   x = 2,989.09