Finding the Fourth Proportional to 10,686.52, 16,031.81 and 4,443.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,686.52 : 16,031.81 = 4,443.15 : x
2. Step 2: Convert to fraction form
   10,686.52/16,031.81 = 4,443.15/x
3. Step 3: Cross multiply
   10,686.52x = 16,031.81 × 4,443.15
4. Step 4: Simplify right side
   10,686.52x = 71,231,736.60
5. Step 5: Solve for x
   x = 71,231,736.60/10,686.52
6. Step 6: Final answer
   x = 6,665.57