Finding the Fourth Proportional to 21,614.01, 29,834.78 and 12,664.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,614.01 : 29,834.78 = 12,664.41 : x
2. Step 2: Convert to fraction form
   21,614.01/29,834.78 = 12,664.41/x
3. Step 3: Cross multiply
   21,614.01x = 29,834.78 × 12,664.41
4. Step 4: Simplify right side
   21,614.01x = 377,839,822.86
5. Step 5: Solve for x
   x = 377,839,822.86/21,614.01
6. Step 6: Final answer
   x = 17,481.25