Finding the Fourth Proportional to 12,667.96, 17,457.42 and 8,935.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.96 : 17,457.42 = 8,935.48 : x
2. Step 2: Convert to fraction form
   12,667.96/17,457.42 = 8,935.48/x
3. Step 3: Cross multiply
   12,667.96x = 17,457.42 × 8,935.48
4. Step 4: Simplify right side
   12,667.96x = 155,990,427.26
5. Step 5: Solve for x
   x = 155,990,427.26/12,667.96
6. Step 6: Final answer
   x = 12,313.78