Finding the Fourth Proportional to 16,638.39, 22,964.85 and 10,974.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.39 : 22,964.85 = 10,974.15 : x
2. Step 2: Convert to fraction form
   16,638.39/22,964.85 = 10,974.15/x
3. Step 3: Cross multiply
   16,638.39x = 22,964.85 × 10,974.15
4. Step 4: Simplify right side
   16,638.39x = 252,019,708.63
5. Step 5: Solve for x
   x = 252,019,708.63/16,638.39
6. Step 6: Final answer
   x = 15,146.88