Finding the Fourth Proportional to 8,186.66, 12,269.71 and 3,501.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,186.66 : 12,269.71 = 3,501.15 : x
2. Step 2: Convert to fraction form
   8,186.66/12,269.71 = 3,501.15/x
3. Step 3: Cross multiply
   8,186.66x = 12,269.71 × 3,501.15
4. Step 4: Simplify right side
   8,186.66x = 42,958,102.85
5. Step 5: Solve for x
   x = 42,958,102.85/8,186.66
6. Step 6: Final answer
   x = 5,247.33