Finding the Fourth Proportional to 22,257.72, 30,715.61 and 13,304.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,257.72 : 30,715.61 = 13,304.79 : x
2. Step 2: Convert to fraction form
   22,257.72/30,715.61 = 13,304.79/x
3. Step 3: Cross multiply
   22,257.72x = 30,715.61 × 13,304.79
4. Step 4: Simplify right side
   22,257.72x = 408,664,674.25
5. Step 5: Solve for x
   x = 408,664,674.25/22,257.72
6. Step 6: Final answer
   x = 18,360.58