Finding the Fourth Proportional to 21,806.08, 30,095.82 and 13,310.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,806.08 : 30,095.82 = 13,310.04 : x
2. Step 2: Convert to fraction form
   21,806.08/30,095.82 = 13,310.04/x
3. Step 3: Cross multiply
   21,806.08x = 30,095.82 × 13,310.04
4. Step 4: Simplify right side
   21,806.08x = 400,576,568.03
5. Step 5: Solve for x
   x = 400,576,568.03/21,806.08
6. Step 6: Final answer
   x = 18,369.95