Finding the Fourth Proportional to 21,410.87, 32,089.56 and 10,315.49

Step by Step Solution

1. Step 1: Write the proportion equation
   21,410.87 : 32,089.56 = 10,315.49 : x
2. Step 2: Convert to fraction form
   21,410.87/32,089.56 = 10,315.49/x
3. Step 3: Cross multiply
   21,410.87x = 32,089.56 × 10,315.49
4. Step 4: Simplify right side
   21,410.87x = 331,019,535.28
5. Step 5: Solve for x
   x = 331,019,535.28/21,410.87
6. Step 6: Final answer
   x = 15,460.35