Finding the Fourth Proportional to 22,021.28, 30,394.18 and 13,949.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,021.28 : 30,394.18 = 13,949.72 : x
2. Step 2: Convert to fraction form
   22,021.28/30,394.18 = 13,949.72/x
3. Step 3: Cross multiply
   22,021.28x = 30,394.18 × 13,949.72
4. Step 4: Simplify right side
   22,021.28x = 423,990,300.63
5. Step 5: Solve for x
   x = 423,990,300.63/22,021.28
6. Step 6: Final answer
   x = 19,253.66