Finding the Fourth Proportional to 21,754.32, 30,016.64 and 12,802.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,754.32 : 30,016.64 = 12,802.24 : x
2. Step 2: Convert to fraction form
   21,754.32/30,016.64 = 12,802.24/x
3. Step 3: Cross multiply
   21,754.32x = 30,016.64 × 12,802.24
4. Step 4: Simplify right side
   21,754.32x = 384,280,229.27
5. Step 5: Solve for x
   x = 384,280,229.27/21,754.32
6. Step 6: Final answer
   x = 17,664.55