Finding the Fourth Proportional to 21,632.89, 29,855.48 and 13,133.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,632.89 : 29,855.48 = 13,133.04 : x
2. Step 2: Convert to fraction form
   21,632.89/29,855.48 = 13,133.04/x
3. Step 3: Cross multiply
   21,632.89x = 29,855.48 × 13,133.04
4. Step 4: Simplify right side
   21,632.89x = 392,093,147.39
5. Step 5: Solve for x
   x = 392,093,147.39/21,632.89
6. Step 6: Final answer
   x = 18,124.86