Finding the Fourth Proportional to 22,181.28, 30,608.96 and 13,228.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,181.28 : 30,608.96 = 13,228.56 : x
2. Step 2: Convert to fraction form
   22,181.28/30,608.96 = 13,228.56/x
3. Step 3: Cross multiply
   22,181.28x = 30,608.96 × 13,228.56
4. Step 4: Simplify right side
   22,181.28x = 404,912,463.90
5. Step 5: Solve for x
   x = 404,912,463.90/22,181.28
6. Step 6: Final answer
   x = 18,254.69