Finding the Fourth Proportional to 23,772.82, 35,660.94 and 8,978.98

Step by Step Solution

1. Step 1: Write the proportion equation
   23,772.82 : 35,660.94 = 8,978.98 : x
2. Step 2: Convert to fraction form
   23,772.82/35,660.94 = 8,978.98/x
3. Step 3: Cross multiply
   23,772.82x = 35,660.94 × 8,978.98
4. Step 4: Simplify right side
   23,772.82x = 320,198,867.04
5. Step 5: Solve for x
   x = 320,198,867.04/23,772.82
6. Step 6: Final answer
   x = 13,469.12