Finding the Fourth Proportional to 30,783.42, 42,456.96 and 22,286.79

Step by Step Solution

1. Step 1: Write the proportion equation
   30,783.42 : 42,456.96 = 22,286.79 : x
2. Step 2: Convert to fraction form
   30,783.42/42,456.96 = 22,286.79/x
3. Step 3: Cross multiply
   30,783.42x = 42,456.96 × 22,286.79
4. Step 4: Simplify right side
   30,783.42x = 946,229,351.56
5. Step 5: Solve for x
   x = 946,229,351.56/30,783.42
6. Step 6: Final answer
   x = 30,738.28