Finding the Fourth Proportional to 8,131.05, 12,172.82 and 7,352.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.05 : 12,172.82 = 7,352.84 : x
2. Step 2: Convert to fraction form
   8,131.05/12,172.82 = 7,352.84/x
3. Step 3: Cross multiply
   8,131.05x = 12,172.82 × 7,352.84
4. Step 4: Simplify right side
   8,131.05x = 89,504,791.48
5. Step 5: Solve for x
   x = 89,504,791.48/8,131.05
6. Step 6: Final answer
   x = 11,007.78