Finding the Fourth Proportional to 9,513.15, 13,131.82 and 8,516.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,513.15 : 13,131.82 = 8,516.69 : x
2. Step 2: Convert to fraction form
   9,513.15/13,131.82 = 8,516.69/x
3. Step 3: Cross multiply
   9,513.15x = 13,131.82 × 8,516.69
4. Step 4: Simplify right side
   9,513.15x = 111,839,708.17
5. Step 5: Solve for x
   x = 111,839,708.17/9,513.15
6. Step 6: Final answer
   x = 11,756.33