Finding the Fourth Proportional to 16,139.40, 22,271.22 and 8,969.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,139.40 : 22,271.22 = 8,969.48 : x
2. Step 2: Convert to fraction form
   16,139.40/22,271.22 = 8,969.48/x
3. Step 3: Cross multiply
   16,139.40x = 22,271.22 × 8,969.48
4. Step 4: Simplify right side
   16,139.40x = 199,761,262.37
5. Step 5: Solve for x
   x = 199,761,262.37/16,139.40
6. Step 6: Final answer
   x = 12,377.24