Finding the Fourth Proportional to 10,811.58, 16,212.33 and 5,616.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,811.58 : 16,212.33 = 5,616.06 : x
2. Step 2: Convert to fraction form
   10,811.58/16,212.33 = 5,616.06/x
3. Step 3: Cross multiply
   10,811.58x = 16,212.33 × 5,616.06
4. Step 4: Simplify right side
   10,811.58x = 91,049,418.02
5. Step 5: Solve for x
   x = 91,049,418.02/10,811.58
6. Step 6: Final answer
   x = 8,421.47