Finding the Fourth Proportional to 22,181, 30,609.76 and 14,223.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,181 : 30,609.76 = 14,223.20 : x
2. Step 2: Convert to fraction form
   22,181/30,609.76 = 14,223.20/x
3. Step 3: Cross multiply
   22,181x = 30,609.76 × 14,223.20
4. Step 4: Simplify right side
   22,181x = 435,368,738.43
5. Step 5: Solve for x
   x = 435,368,738.43/22,181
6. Step 6: Final answer
   x = 19,628.00