Finding the Fourth Proportional to 23,729.72, 35,659.25 and 12,644.33

Step by Step Solution

1. Step 1: Write the proportion equation
   23,729.72 : 35,659.25 = 12,644.33 : x
2. Step 2: Convert to fraction form
   23,729.72/35,659.25 = 12,644.33/x
3. Step 3: Cross multiply
   23,729.72x = 35,659.25 × 12,644.33
4. Step 4: Simplify right side
   23,729.72x = 450,887,261.33
5. Step 5: Solve for x
   x = 450,887,261.33/23,729.72
6. Step 6: Final answer
   x = 19,000.95