Finding the Fourth Proportional to 11,500.96, 15,855.60 and 9,510.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,500.96 : 15,855.60 = 9,510.88 : x
2. Step 2: Convert to fraction form
   11,500.96/15,855.60 = 9,510.88/x
3. Step 3: Cross multiply
   11,500.96x = 15,855.60 × 9,510.88
4. Step 4: Simplify right side
   11,500.96x = 150,800,708.93
5. Step 5: Solve for x
   x = 150,800,708.93/11,500.96
6. Step 6: Final answer
   x = 13,112.01