Finding the Fourth Proportional to 8,813.12, 12,161.89 and 5,036.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,813.12 : 12,161.89 = 5,036.05 : x
2. Step 2: Convert to fraction form
   8,813.12/12,161.89 = 5,036.05/x
3. Step 3: Cross multiply
   8,813.12x = 12,161.89 × 5,036.05
4. Step 4: Simplify right side
   8,813.12x = 61,247,855.73
5. Step 5: Solve for x
   x = 61,247,855.73/8,813.12
6. Step 6: Final answer
   x = 6,949.62