Finding the Fourth Proportional to 16,161.38, 22,298.72 and 9,871.46

Step by Step Solution

1. Step 1: Write the proportion equation
   16,161.38 : 22,298.72 = 9,871.46 : x
2. Step 2: Convert to fraction form
   16,161.38/22,298.72 = 9,871.46/x
3. Step 3: Cross multiply
   16,161.38x = 22,298.72 × 9,871.46
4. Step 4: Simplify right side
   16,161.38x = 220,120,922.53
5. Step 5: Solve for x
   x = 220,120,922.53/16,161.38
6. Step 6: Final answer
   x = 13,620.18