Finding the Fourth Proportional to 21,271, 31,926.19 and 10,748.43

Step by Step Solution

1. Step 1: Write the proportion equation
   21,271 : 31,926.19 = 10,748.43 : x
2. Step 2: Convert to fraction form
   21,271/31,926.19 = 10,748.43/x
3. Step 3: Cross multiply
   21,271x = 31,926.19 × 10,748.43
4. Step 4: Simplify right side
   21,271x = 343,156,258.75
5. Step 5: Solve for x
   x = 343,156,258.75/21,271
6. Step 6: Final answer
   x = 16,132.59