Finding the Fourth Proportional to 22,164.42, 33,230.20 and 13,397.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,164.42 : 33,230.20 = 13,397.28 : x
2. Step 2: Convert to fraction form
   22,164.42/33,230.20 = 13,397.28/x
3. Step 3: Cross multiply
   22,164.42x = 33,230.20 × 13,397.28
4. Step 4: Simplify right side
   22,164.42x = 445,194,293.86
5. Step 5: Solve for x
   x = 445,194,293.86/22,164.42
6. Step 6: Final answer
   x = 20,085.99