Finding the Fourth Proportional to 12,139.05, 16,752.20 and 6,834.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139.05 : 16,752.20 = 6,834.06 : x
2. Step 2: Convert to fraction form
   12,139.05/16,752.20 = 6,834.06/x
3. Step 3: Cross multiply
   12,139.05x = 16,752.20 × 6,834.06
4. Step 4: Simplify right side
   12,139.05x = 114,485,456.17
5. Step 5: Solve for x
   x = 114,485,456.17/12,139.05
6. Step 6: Final answer
   x = 9,431.17