Finding the Fourth Proportional to 8,065.66, 12,072.56 and 5,454.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,065.66 : 12,072.56 = 5,454.22 : x
2. Step 2: Convert to fraction form
   8,065.66/12,072.56 = 5,454.22/x
3. Step 3: Cross multiply
   8,065.66x = 12,072.56 × 5,454.22
4. Step 4: Simplify right side
   8,065.66x = 65,846,398.20
5. Step 5: Solve for x
   x = 65,846,398.20/8,065.66
6. Step 6: Final answer
   x = 8,163.80