Finding the Fourth Proportional to 16,465.06, 22,721.82 and 9,391.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,465.06 : 22,721.82 = 9,391.30 : x
2. Step 2: Convert to fraction form
   16,465.06/22,721.82 = 9,391.30/x
3. Step 3: Cross multiply
   16,465.06x = 22,721.82 × 9,391.30
4. Step 4: Simplify right side
   16,465.06x = 213,387,428.17
5. Step 5: Solve for x
   x = 213,387,428.17/16,465.06
6. Step 6: Final answer
   x = 12,960.02