Finding the Fourth Proportional to 8,127.11, 12,137.31 and 7,007.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,127.11 : 12,137.31 = 7,007.67 : x
2. Step 2: Convert to fraction form
   8,127.11/12,137.31 = 7,007.67/x
3. Step 3: Cross multiply
   8,127.11x = 12,137.31 × 7,007.67
4. Step 4: Simplify right side
   8,127.11x = 85,054,263.17
5. Step 5: Solve for x
   x = 85,054,263.17/8,127.11
6. Step 6: Final answer
   x = 10,465.50