Finding the Fourth Proportional to 21,072.18, 31,635.72 and 14,097

Step by Step Solution

1. Step 1: Write the proportion equation
   21,072.18 : 31,635.72 = 14,097 : x
2. Step 2: Convert to fraction form
   21,072.18/31,635.72 = 14,097/x
3. Step 3: Cross multiply
   21,072.18x = 31,635.72 × 14,097
4. Step 4: Simplify right side
   21,072.18x = 445,968,744.84
5. Step 5: Solve for x
   x = 445,968,744.84/21,072.18
6. Step 6: Final answer
   x = 21,163.86