Finding the Fourth Proportional to 12,171.48, 18,257.34 and 3,851.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,171.48 : 18,257.34 = 3,851.34 : x
2. Step 2: Convert to fraction form
   12,171.48/18,257.34 = 3,851.34/x
3. Step 3: Cross multiply
   12,171.48x = 18,257.34 × 3,851.34
4. Step 4: Simplify right side
   12,171.48x = 70,315,223.84
5. Step 5: Solve for x
   x = 70,315,223.84/12,171.48
6. Step 6: Final answer
   x = 5,777.05