Finding the Fourth Proportional to 12,872.82, 17,766.79 and 9,346.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,872.82 : 17,766.79 = 9,346.29 : x
2. Step 2: Convert to fraction form
   12,872.82/17,766.79 = 9,346.29/x
3. Step 3: Cross multiply
   12,872.82x = 17,766.79 × 9,346.29
4. Step 4: Simplify right side
   12,872.82x = 166,053,534.29
5. Step 5: Solve for x
   x = 166,053,534.29/12,872.82
6. Step 6: Final answer
   x = 12,899.54