Finding the Fourth Proportional to 8,757.20, 13,111.08 and 8,068.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,757.20 : 13,111.08 = 8,068.29 : x
2. Step 2: Convert to fraction form
   8,757.20/13,111.08 = 8,068.29/x
3. Step 3: Cross multiply
   8,757.20x = 13,111.08 × 8,068.29
4. Step 4: Simplify right side
   8,757.20x = 105,783,995.65
5. Step 5: Solve for x
   x = 105,783,995.65/8,757.20
6. Step 6: Final answer
   x = 12,079.67