Finding the Fourth Proportional to 8,174.18, 12,229.38 and 7,179.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,174.18 : 12,229.38 = 7,179.10 : x
2. Step 2: Convert to fraction form
   8,174.18/12,229.38 = 7,179.10/x
3. Step 3: Cross multiply
   8,174.18x = 12,229.38 × 7,179.10
4. Step 4: Simplify right side
   8,174.18x = 87,795,911.38
5. Step 5: Solve for x
   x = 87,795,911.38/8,174.18
6. Step 6: Final answer
   x = 10,740.64