Finding the Fourth Proportional to 10,449.52, 15,676.87 and 5,187

Step by Step Solution

1. Step 1: Write the proportion equation
   10,449.52 : 15,676.87 = 5,187 : x
2. Step 2: Convert to fraction form
   10,449.52/15,676.87 = 5,187/x
3. Step 3: Cross multiply
   10,449.52x = 15,676.87 × 5,187
4. Step 4: Simplify right side
   10,449.52x = 81,315,924.69
5. Step 5: Solve for x
   x = 81,315,924.69/10,449.52
6. Step 6: Final answer
   x = 7,781.79