Finding the Fourth Proportional to 16,139.24, 22,271.56 and 8,969.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,139.24 : 22,271.56 = 8,969.60 : x
2. Step 2: Convert to fraction form
   16,139.24/22,271.56 = 8,969.60/x
3. Step 3: Cross multiply
   16,139.24x = 22,271.56 × 8,969.60
4. Step 4: Simplify right side
   16,139.24x = 199,767,017.83
5. Step 5: Solve for x
   x = 199,767,017.83/16,139.24
6. Step 6: Final answer
   x = 12,377.72