Finding the Fourth Proportional to 21,540.84, 32,320.70 and 10,456.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,540.84 : 32,320.70 = 10,456.04 : x
2. Step 2: Convert to fraction form
   21,540.84/32,320.70 = 10,456.04/x
3. Step 3: Cross multiply
   21,540.84x = 32,320.70 × 10,456.04
4. Step 4: Simplify right side
   21,540.84x = 337,946,532.03
5. Step 5: Solve for x
   x = 337,946,532.03/21,540.84
6. Step 6: Final answer
   x = 15,688.64