Finding the Fourth Proportional to 12,366.81, 17,089.49 and 9,377.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,366.81 : 17,089.49 = 9,377.10 : x
2. Step 2: Convert to fraction form
   12,366.81/17,089.49 = 9,377.10/x
3. Step 3: Cross multiply
   12,366.81x = 17,089.49 × 9,377.10
4. Step 4: Simplify right side
   12,366.81x = 160,249,856.68
5. Step 5: Solve for x
   x = 160,249,856.68/12,366.81
6. Step 6: Final answer
   x = 12,958.06