Finding the Fourth Proportional to 22,479.09, 31,022.55 and 12,922.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,479.09 : 31,022.55 = 12,922.02 : x
2. Step 2: Convert to fraction form
   22,479.09/31,022.55 = 12,922.02/x
3. Step 3: Cross multiply
   22,479.09x = 31,022.55 × 12,922.02
4. Step 4: Simplify right side
   22,479.09x = 400,874,011.55
5. Step 5: Solve for x
   x = 400,874,011.55/22,479.09
6. Step 6: Final answer
   x = 17,833.20