Finding the Fourth Proportional to 12,661.94, 17,448.81 and 9,118.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,661.94 : 17,448.81 = 9,118.46 : x
2. Step 2: Convert to fraction form
   12,661.94/17,448.81 = 9,118.46/x
3. Step 3: Cross multiply
   12,661.94x = 17,448.81 × 9,118.46
4. Step 4: Simplify right side
   12,661.94x = 159,106,276.03
5. Step 5: Solve for x
   x = 159,106,276.03/12,661.94
6. Step 6: Final answer
   x = 12,565.71