Finding the Fourth Proportional to 22,164.43, 30,582.72 and 13,212.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,164.43 : 30,582.72 = 13,212.76 : x
2. Step 2: Convert to fraction form
   22,164.43/30,582.72 = 13,212.76/x
3. Step 3: Cross multiply
   22,164.43x = 30,582.72 × 13,212.76
4. Step 4: Simplify right side
   22,164.43x = 404,082,139.51
5. Step 5: Solve for x
   x = 404,082,139.51/22,164.43
6. Step 6: Final answer
   x = 18,231.11