Finding the Fourth Proportional to 11,155.33, 16,722.12 and 5,310.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,155.33 : 16,722.12 = 5,310.37 : x
2. Step 2: Convert to fraction form
   11,155.33/16,722.12 = 5,310.37/x
3. Step 3: Cross multiply
   11,155.33x = 16,722.12 × 5,310.37
4. Step 4: Simplify right side
   11,155.33x = 88,800,617.83
5. Step 5: Solve for x
   x = 88,800,617.83/11,155.33
6. Step 6: Final answer
   x = 7,960.38