Finding the Fourth Proportional to 8,960.01, 12,362.79 and 5,422.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,960.01 : 12,362.79 = 5,422.47 : x
2. Step 2: Convert to fraction form
   8,960.01/12,362.79 = 5,422.47/x
3. Step 3: Cross multiply
   8,960.01x = 12,362.79 × 5,422.47
4. Step 4: Simplify right side
   8,960.01x = 67,036,857.89
5. Step 5: Solve for x
   x = 67,036,857.89/8,960.01
6. Step 6: Final answer
   x = 7,481.78