Finding the Fourth Proportional to 21,822.79, 30,118.32 and 13,323.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,822.79 : 30,118.32 = 13,323.16 : x
2. Step 2: Convert to fraction form
   21,822.79/30,118.32 = 13,323.16/x
3. Step 3: Cross multiply
   21,822.79x = 30,118.32 × 13,323.16
4. Step 4: Simplify right side
   21,822.79x = 401,271,196.29
5. Step 5: Solve for x
   x = 401,271,196.29/21,822.79
6. Step 6: Final answer
   x = 18,387.71