Finding the Fourth Proportional to 22,722.32, 31,358.50 and 12,653.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,722.32 : 31,358.50 = 12,653.32 : x
2. Step 2: Convert to fraction form
   22,722.32/31,358.50 = 12,653.32/x
3. Step 3: Cross multiply
   22,722.32x = 31,358.50 × 12,653.32
4. Step 4: Simplify right side
   22,722.32x = 396,789,135.22
5. Step 5: Solve for x
   x = 396,789,135.22/22,722.32
6. Step 6: Final answer
   x = 17,462.53