Finding the Fourth Proportional to 12,131.92, 16,742.15 and 6,826.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.92 : 16,742.15 = 6,826.78 : x
2. Step 2: Convert to fraction form
   12,131.92/16,742.15 = 6,826.78/x
3. Step 3: Cross multiply
   12,131.92x = 16,742.15 × 6,826.78
4. Step 4: Simplify right side
   12,131.92x = 114,294,974.78
5. Step 5: Solve for x
   x = 114,294,974.78/12,131.92
6. Step 6: Final answer
   x = 9,421.01