Finding the Fourth Proportional to 12,426.82, 17,159.95 and 8,457.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.82 : 17,159.95 = 8,457.41 : x
2. Step 2: Convert to fraction form
   12,426.82/17,159.95 = 8,457.41/x
3. Step 3: Cross multiply
   12,426.82x = 17,159.95 × 8,457.41
4. Step 4: Simplify right side
   12,426.82x = 145,128,786.20
5. Step 5: Solve for x
   x = 145,128,786.20/12,426.82
6. Step 6: Final answer
   x = 11,678.68