Finding the Fourth Proportional to 10,671.09, 16,016.33 and 5,409.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,671.09 : 16,016.33 = 5,409.77 : x
2. Step 2: Convert to fraction form
   10,671.09/16,016.33 = 5,409.77/x
3. Step 3: Cross multiply
   10,671.09x = 16,016.33 × 5,409.77
4. Step 4: Simplify right side
   10,671.09x = 86,644,554.41
5. Step 5: Solve for x
   x = 86,644,554.41/10,671.09
6. Step 6: Final answer
   x = 8,119.56