Finding the Fourth Proportional to 12,117.72, 16,722.72 and 6,812.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,117.72 : 16,722.72 = 6,812.52 : x
2. Step 2: Convert to fraction form
   12,117.72/16,722.72 = 6,812.52/x
3. Step 3: Cross multiply
   12,117.72x = 16,722.72 × 6,812.52
4. Step 4: Simplify right side
   12,117.72x = 113,923,864.45
5. Step 5: Solve for x
   x = 113,923,864.45/12,117.72
6. Step 6: Final answer
   x = 9,401.43