Finding the Fourth Proportional to 21,736.32, 29,993.76 and 12,303

Step by Step Solution

1. Step 1: Write the proportion equation
   21,736.32 : 29,993.76 = 12,303 : x
2. Step 2: Convert to fraction form
   21,736.32/29,993.76 = 12,303/x
3. Step 3: Cross multiply
   21,736.32x = 29,993.76 × 12,303
4. Step 4: Simplify right side
   21,736.32x = 369,013,229.28
5. Step 5: Solve for x
   x = 369,013,229.28/21,736.32
6. Step 6: Final answer
   x = 16,976.80