Finding the Fourth Proportional to 8,111.75, 12,086.98 and 7,227.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.75 : 12,086.98 = 7,227.45 : x
2. Step 2: Convert to fraction form
   8,111.75/12,086.98 = 7,227.45/x
3. Step 3: Cross multiply
   8,111.75x = 12,086.98 × 7,227.45
4. Step 4: Simplify right side
   8,111.75x = 87,358,043.60
5. Step 5: Solve for x
   x = 87,358,043.60/8,111.75
6. Step 6: Final answer
   x = 10,769.32