Finding the Fourth Proportional to 8,160.96, 11,188.78 and 8,013.33

Step by Step Solution

1. Step 1: Write the proportion equation
   8,160.96 : 11,188.78 = 8,013.33 : x
2. Step 2: Convert to fraction form
   8,160.96/11,188.78 = 8,013.33/x
3. Step 3: Cross multiply
   8,160.96x = 11,188.78 × 8,013.33
4. Step 4: Simplify right side
   8,160.96x = 89,659,395.32
5. Step 5: Solve for x
   x = 89,659,395.32/8,160.96
6. Step 6: Final answer
   x = 10,986.38