Finding the Fourth Proportional to 12,677.82, 17,496.81 and 9,143.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.82 : 17,496.81 = 9,143.16 : x
2. Step 2: Convert to fraction form
   12,677.82/17,496.81 = 9,143.16/x
3. Step 3: Cross multiply
   12,677.82x = 17,496.81 × 9,143.16
4. Step 4: Simplify right side
   12,677.82x = 159,976,133.32
5. Step 5: Solve for x
   x = 159,976,133.32/12,677.82
6. Step 6: Final answer
   x = 12,618.58