Finding the Fourth Proportional to 21,424.76, 32,157.89 and 10,339.23

Step by Step Solution

1. Step 1: Write the proportion equation
   21,424.76 : 32,157.89 = 10,339.23 : x
2. Step 2: Convert to fraction form
   21,424.76/32,157.89 = 10,339.23/x
3. Step 3: Cross multiply
   21,424.76x = 32,157.89 × 10,339.23
4. Step 4: Simplify right side
   21,424.76x = 332,487,821.02
5. Step 5: Solve for x
   x = 332,487,821.02/21,424.76
6. Step 6: Final answer
   x = 15,518.86