Finding the Fourth Proportional to 12,188.76, 18,285.83 and 3,869.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,188.76 : 18,285.83 = 3,869.25 : x
2. Step 2: Convert to fraction form
   12,188.76/18,285.83 = 3,869.25/x
3. Step 3: Cross multiply
   12,188.76x = 18,285.83 × 3,869.25
4. Step 4: Simplify right side
   12,188.76x = 70,752,447.73
5. Step 5: Solve for x
   x = 70,752,447.73/12,188.76
6. Step 6: Final answer
   x = 5,804.73