Finding the Fourth Proportional to 22,096, 30,486 and 13,139.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,096 : 30,486 = 13,139.02 : x
2. Step 2: Convert to fraction form
   22,096/30,486 = 13,139.02/x
3. Step 3: Cross multiply
   22,096x = 30,486 × 13,139.02
4. Step 4: Simplify right side
   22,096x = 400,556,163.72
5. Step 5: Solve for x
   x = 400,556,163.72/22,096
6. Step 6: Final answer
   x = 18,127.99