Finding the Fourth Proportional to 22,453.98, 30,984.30 and 13,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,453.98 : 30,984.30 = 13,021.50 : x
2. Step 2: Convert to fraction form
   22,453.98/30,984.30 = 13,021.50/x
3. Step 3: Cross multiply
   22,453.98x = 30,984.30 × 13,021.50
4. Step 4: Simplify right side
   22,453.98x = 403,462,062.45
5. Step 5: Solve for x
   x = 403,462,062.45/22,453.98
6. Step 6: Final answer
   x = 17,968.40