Finding the Fourth Proportional to 12,188.57, 18,283.37 and 3,868.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,188.57 : 18,283.37 = 3,868.41 : x
2. Step 2: Convert to fraction form
   12,188.57/18,283.37 = 3,868.41/x
3. Step 3: Cross multiply
   12,188.57x = 18,283.37 × 3,868.41
4. Step 4: Simplify right side
   12,188.57x = 70,727,571.34
5. Step 5: Solve for x
   x = 70,727,571.34/12,188.57
6. Step 6: Final answer
   x = 5,802.78