Finding the Fourth Proportional to 21,709.42, 32,513.10 and 10,581.23

Step by Step Solution

1. Step 1: Write the proportion equation
   21,709.42 : 32,513.10 = 10,581.23 : x
2. Step 2: Convert to fraction form
   21,709.42/32,513.10 = 10,581.23/x
3. Step 3: Cross multiply
   21,709.42x = 32,513.10 × 10,581.23
4. Step 4: Simplify right side
   21,709.42x = 344,028,630.72
5. Step 5: Solve for x
   x = 344,028,630.72/21,709.42
6. Step 6: Final answer
   x = 15,846.98