Finding the Fourth Proportional to 21,419.50, 32,142.53 and 10,327.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,419.50 : 32,142.53 = 10,327.31 : x
2. Step 2: Convert to fraction form
   21,419.50/32,142.53 = 10,327.31/x
3. Step 3: Cross multiply
   21,419.50x = 32,142.53 × 10,327.31
4. Step 4: Simplify right side
   21,419.50x = 331,945,977.67
5. Step 5: Solve for x
   x = 331,945,977.67/21,419.50
6. Step 6: Final answer
   x = 15,497.37