Finding the Fourth Proportional to 8,128.07, 11,217.56 and 5,861.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.07 : 11,217.56 = 5,861.27 : x
2. Step 2: Convert to fraction form
   8,128.07/11,217.56 = 5,861.27/x
3. Step 3: Cross multiply
   8,128.07x = 11,217.56 × 5,861.27
4. Step 4: Simplify right side
   8,128.07x = 65,749,118.59
5. Step 5: Solve for x
   x = 65,749,118.59/8,128.07
6. Step 6: Final answer
   x = 8,089.15