Finding the Fourth Proportional to 16,862.72, 23,270.27 and 9,309.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,862.72 : 23,270.27 = 9,309.05 : x
2. Step 2: Convert to fraction form
   16,862.72/23,270.27 = 9,309.05/x
3. Step 3: Cross multiply
   16,862.72x = 23,270.27 × 9,309.05
4. Step 4: Simplify right side
   16,862.72x = 216,623,944.05
5. Step 5: Solve for x
   x = 216,623,944.05/16,862.72
6. Step 6: Final answer
   x = 12,846.32