Finding the Fourth Proportional to 12,465.94, 17,185.77 and 9,956.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,465.94 : 17,185.77 = 9,956.50 : x
2. Step 2: Convert to fraction form
   12,465.94/17,185.77 = 9,956.50/x
3. Step 3: Cross multiply
   12,465.94x = 17,185.77 × 9,956.50
4. Step 4: Simplify right side
   12,465.94x = 171,110,119.01
5. Step 5: Solve for x
   x = 171,110,119.01/12,465.94
6. Step 6: Final answer
   x = 13,726.21