Finding the Fourth Proportional to 8,661.33, 11,946.69 and 5,516.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,661.33 : 11,946.69 = 5,516.10 : x
2. Step 2: Convert to fraction form
   8,661.33/11,946.69 = 5,516.10/x
3. Step 3: Cross multiply
   8,661.33x = 11,946.69 × 5,516.10
4. Step 4: Simplify right side
   8,661.33x = 65,899,136.71
5. Step 5: Solve for x
   x = 65,899,136.71/8,661.33
6. Step 6: Final answer
   x = 7,608.43