Finding the Fourth Proportional to 21,825.04, 30,118.56 and 12,395.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,825.04 : 30,118.56 = 12,395.04 : x
2. Step 2: Convert to fraction form
   21,825.04/30,118.56 = 12,395.04/x
3. Step 3: Cross multiply
   21,825.04x = 30,118.56 × 12,395.04
4. Step 4: Simplify right side
   21,825.04x = 373,320,755.94
5. Step 5: Solve for x
   x = 373,320,755.94/21,825.04
6. Step 6: Final answer
   x = 17,105.16