Finding the Fourth Proportional to 30,847, 42,549.72 and 22,772.40

Step by Step Solution

1. Step 1: Write the proportion equation
   30,847 : 42,549.72 = 22,772.40 : x
2. Step 2: Convert to fraction form
   30,847/42,549.72 = 22,772.40/x
3. Step 3: Cross multiply
   30,847x = 42,549.72 × 22,772.40
4. Step 4: Simplify right side
   30,847x = 968,959,243.73
5. Step 5: Solve for x
   x = 968,959,243.73/30,847
6. Step 6: Final answer
   x = 31,411.78