Finding the Fourth Proportional to 10,808.77, 16,105.71 and 9,629.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,808.77 : 16,105.71 = 9,629.72 : x
2. Step 2: Convert to fraction form
   10,808.77/16,105.71 = 9,629.72/x
3. Step 3: Cross multiply
   10,808.77x = 16,105.71 × 9,629.72
4. Step 4: Simplify right side
   10,808.77x = 155,093,397.17
5. Step 5: Solve for x
   x = 155,093,397.17/10,808.77
6. Step 6: Final answer
   x = 14,348.85