Finding the Fourth Proportional to 22,722.42, 31,356.69 and 12,650.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,722.42 : 31,356.69 = 12,650.64 : x
2. Step 2: Convert to fraction form
   22,722.42/31,356.69 = 12,650.64/x
3. Step 3: Cross multiply
   22,722.42x = 31,356.69 × 12,650.64
4. Step 4: Simplify right side
   22,722.42x = 396,682,196.78
5. Step 5: Solve for x
   x = 396,682,196.78/22,722.42
6. Step 6: Final answer
   x = 17,457.74