Finding the Fourth Proportional to 3,987.08, 5,502.61 and 2,308.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.08 : 5,502.61 = 2,308.47 : x
2. Step 2: Convert to fraction form
   3,987.08/5,502.61 = 2,308.47/x
3. Step 3: Cross multiply
   3,987.08x = 5,502.61 × 2,308.47
4. Step 4: Simplify right side
   3,987.08x = 12,702,582.59
5. Step 5: Solve for x
   x = 12,702,582.59/3,987.08
6. Step 6: Final answer
   x = 3,185.94