Finding the Fourth Proportional to 8,805, 12,150.90 and 5,268.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,805 : 12,150.90 = 5,268.72 : x
2. Step 2: Convert to fraction form
   8,805/12,150.90 = 5,268.72/x
3. Step 3: Cross multiply
   8,805x = 12,150.90 × 5,268.72
4. Step 4: Simplify right side
   8,805x = 64,019,689.85
5. Step 5: Solve for x
   x = 64,019,689.85/8,805
6. Step 6: Final answer
   x = 7,270.83