Finding the Fourth Proportional to 8,960.09, 12,361.61 and 5,422.01

Step by Step Solution

1. Step 1: Write the proportion equation
   8,960.09 : 12,361.61 = 5,422.01 : x
2. Step 2: Convert to fraction form
   8,960.09/12,361.61 = 5,422.01/x
3. Step 3: Cross multiply
   8,960.09x = 12,361.61 × 5,422.01
4. Step 4: Simplify right side
   8,960.09x = 67,024,724.78
5. Step 5: Solve for x
   x = 67,024,724.78/8,960.09
6. Step 6: Final answer
   x = 7,480.37