Finding the Fourth Proportional to 11,105.62, 16,646.82 and 5,255.26

Step by Step Solution

1. Step 1: Write the proportion equation
   11,105.62 : 16,646.82 = 5,255.26 : x
2. Step 2: Convert to fraction form
   11,105.62/16,646.82 = 5,255.26/x
3. Step 3: Cross multiply
   11,105.62x = 16,646.82 × 5,255.26
4. Step 4: Simplify right side
   11,105.62x = 87,483,367.27
5. Step 5: Solve for x
   x = 87,483,367.27/11,105.62
6. Step 6: Final answer
   x = 7,877.40