Finding the Fourth Proportional to 3,987.02, 5,502.09 and 2,308.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.02 : 5,502.09 = 2,308.52 : x
2. Step 2: Convert to fraction form
   3,987.02/5,502.09 = 2,308.52/x
3. Step 3: Cross multiply
   3,987.02x = 5,502.09 × 2,308.52
4. Step 4: Simplify right side
   3,987.02x = 12,701,676.82
5. Step 5: Solve for x
   x = 12,701,676.82/3,987.02
6. Step 6: Final answer
   x = 3,185.75