Finding the Fourth Proportional to 3,981.08, 5,499.42 and 3,786.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.08 : 5,499.42 = 3,786.68 : x
2. Step 2: Convert to fraction form
   3,981.08/5,499.42 = 3,786.68/x
3. Step 3: Cross multiply
   3,981.08x = 5,499.42 × 3,786.68
4. Step 4: Simplify right side
   3,981.08x = 20,824,543.73
5. Step 5: Solve for x
   x = 20,824,543.73/3,981.08
6. Step 6: Final answer
   x = 5,230.88