Finding the Fourth Proportional to 12,945.68, 17,871.05 and 9,760.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,945.68 : 17,871.05 = 9,760.26 : x
2. Step 2: Convert to fraction form
   12,945.68/17,871.05 = 9,760.26/x
3. Step 3: Cross multiply
   12,945.68x = 17,871.05 × 9,760.26
4. Step 4: Simplify right side
   12,945.68x = 174,426,185.89
5. Step 5: Solve for x
   x = 174,426,185.89/12,945.68
6. Step 6: Final answer
   x = 13,473.70