Finding the Fourth Proportional to 8,114.57, 12,171.82 and 3,180.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,114.57 : 12,171.82 = 3,180.72 : x
2. Step 2: Convert to fraction form
   8,114.57/12,171.82 = 3,180.72/x
3. Step 3: Cross multiply
   8,114.57x = 12,171.82 × 3,180.72
4. Step 4: Simplify right side
   8,114.57x = 38,715,151.31
5. Step 5: Solve for x
   x = 38,715,151.31/8,114.57
6. Step 6: Final answer
   x = 4,771.07