Finding the Fourth Proportional to 16,021.30, 22,109.40 and 8,947.96

Step by Step Solution

1. Step 1: Write the proportion equation
   16,021.30 : 22,109.40 = 8,947.96 : x
2. Step 2: Convert to fraction form
   16,021.30/22,109.40 = 8,947.96/x
3. Step 3: Cross multiply
   16,021.30x = 22,109.40 × 8,947.96
4. Step 4: Simplify right side
   16,021.30x = 197,834,026.82
5. Step 5: Solve for x
   x = 197,834,026.82/16,021.30
6. Step 6: Final answer
   x = 12,348.19