Finding the Fourth Proportional to 21,903.04, 30,224.52 and 12,469.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,903.04 : 30,224.52 = 12,469.72 : x
2. Step 2: Convert to fraction form
   21,903.04/30,224.52 = 12,469.72/x
3. Step 3: Cross multiply
   21,903.04x = 30,224.52 × 12,469.72
4. Step 4: Simplify right side
   21,903.04x = 376,891,301.53
5. Step 5: Solve for x
   x = 376,891,301.53/21,903.04
6. Step 6: Final answer
   x = 17,207.26