Finding the Fourth Proportional to 30,974.80, 42,744.72 and 16,827.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,974.80 : 42,744.72 = 16,827.88 : x
2. Step 2: Convert to fraction form
   30,974.80/42,744.72 = 16,827.88/x
3. Step 3: Cross multiply
   30,974.80x = 42,744.72 × 16,827.88
4. Step 4: Simplify right side
   30,974.80x = 719,303,018.79
5. Step 5: Solve for x
   x = 719,303,018.79/30,974.80
6. Step 6: Final answer
   x = 23,222.20