Finding the Fourth Proportional to 11,763.72, 16,227.81 and 9,528.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,763.72 : 16,227.81 = 9,528.12 : x
2. Step 2: Convert to fraction form
   11,763.72/16,227.81 = 9,528.12/x
3. Step 3: Cross multiply
   11,763.72x = 16,227.81 × 9,528.12
4. Step 4: Simplify right side
   11,763.72x = 154,620,521.02
5. Step 5: Solve for x
   x = 154,620,521.02/11,763.72
6. Step 6: Final answer
   x = 13,143.85