Finding the Fourth Proportional to 12,851.75, 19,280.25 and 5,456.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,851.75 : 19,280.25 = 5,456.18 : x
2. Step 2: Convert to fraction form
   12,851.75/19,280.25 = 5,456.18/x
3. Step 3: Cross multiply
   12,851.75x = 19,280.25 × 5,456.18
4. Step 4: Simplify right side
   12,851.75x = 105,196,418.04
5. Step 5: Solve for x
   x = 105,196,418.04/12,851.75
6. Step 6: Final answer
   x = 8,185.38