Finding the Fourth Proportional to 8,960.90, 12,362.76 and 5,422.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,960.90 : 12,362.76 = 5,422.82 : x
2. Step 2: Convert to fraction form
   8,960.90/12,362.76 = 5,422.82/x
3. Step 3: Cross multiply
   8,960.90x = 12,362.76 × 5,422.82
4. Step 4: Simplify right side
   8,960.90x = 67,040,960.37
5. Step 5: Solve for x
   x = 67,040,960.37/8,960.90
6. Step 6: Final answer
   x = 7,481.50