Finding the Fourth Proportional to 21,934.61, 30,270 and 11,863.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,934.61 : 30,270 = 11,863.25 : x
2. Step 2: Convert to fraction form
   21,934.61/30,270 = 11,863.25/x
3. Step 3: Cross multiply
   21,934.61x = 30,270 × 11,863.25
4. Step 4: Simplify right side
   21,934.61x = 359,100,426.15
5. Step 5: Solve for x
   x = 359,100,426.15/21,934.61
6. Step 6: Final answer
   x = 16,371.41