Finding the Fourth Proportional to 21,131.53, 31,713.25 and 14,452.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,131.53 : 31,713.25 = 14,452.06 : x
2. Step 2: Convert to fraction form
   21,131.53/31,713.25 = 14,452.06/x
3. Step 3: Cross multiply
   21,131.53x = 31,713.25 × 14,452.06
4. Step 4: Simplify right side
   21,131.53x = 458,321,791.80
5. Step 5: Solve for x
   x = 458,321,791.80/21,131.53
6. Step 6: Final answer
   x = 21,689.00