Finding the Fourth Proportional to 21,793.55, 30,078.54 and 13,297.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,793.55 : 30,078.54 = 13,297.52 : x
2. Step 2: Convert to fraction form
   21,793.55/30,078.54 = 13,297.52/x
3. Step 3: Cross multiply
   21,793.55x = 30,078.54 × 13,297.52
4. Step 4: Simplify right side
   21,793.55x = 399,969,987.22
5. Step 5: Solve for x
   x = 399,969,987.22/21,793.55
6. Step 6: Final answer
   x = 18,352.68