Finding the Fourth Proportional to 16,020.90, 22,108.81 and 8,947.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,020.90 : 22,108.81 = 8,947.32 : x
2. Step 2: Convert to fraction form
   16,020.90/22,108.81 = 8,947.32/x
3. Step 3: Cross multiply
   16,020.90x = 22,108.81 × 8,947.32
4. Step 4: Simplify right side
   16,020.90x = 197,814,597.89
5. Step 5: Solve for x
   x = 197,814,597.89/16,020.90
6. Step 6: Final answer
   x = 12,347.28