Finding the Fourth Proportional to 12,456.71, 17,173.75 and 10,064

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.71 : 17,173.75 = 10,064 : x
2. Step 2: Convert to fraction form
   12,456.71/17,173.75 = 10,064/x
3. Step 3: Cross multiply
   12,456.71x = 17,173.75 × 10,064
4. Step 4: Simplify right side
   12,456.71x = 172,836,620
5. Step 5: Solve for x
   x = 172,836,620/12,456.71
6. Step 6: Final answer
   x = 13,874.98