Finding the Fourth Proportional to 12,431.82, 17,155.69 and 6,766.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,431.82 : 17,155.69 = 6,766.37 : x
2. Step 2: Convert to fraction form
   12,431.82/17,155.69 = 6,766.37/x
3. Step 3: Cross multiply
   12,431.82x = 17,155.69 × 6,766.37
4. Step 4: Simplify right side
   12,431.82x = 116,081,746.15
5. Step 5: Solve for x
   x = 116,081,746.15/12,431.82
6. Step 6: Final answer
   x = 9,337.47