Finding the Fourth Proportional to 3,986.08, 5,500.89 and 2,308.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.08 : 5,500.89 = 2,308.06 : x
2. Step 2: Convert to fraction form
   3,986.08/5,500.89 = 2,308.06/x
3. Step 3: Cross multiply
   3,986.08x = 5,500.89 × 2,308.06
4. Step 4: Simplify right side
   3,986.08x = 12,696,384.17
5. Step 5: Solve for x
   x = 12,696,384.17/3,986.08
6. Step 6: Final answer
   x = 3,185.18