Finding the Fourth Proportional to 21,428.82, 32,164.01 and 10,343.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,428.82 : 32,164.01 = 10,343.31 : x
2. Step 2: Convert to fraction form
   21,428.82/32,164.01 = 10,343.31/x
3. Step 3: Cross multiply
   21,428.82x = 32,164.01 × 10,343.31
4. Step 4: Simplify right side
   21,428.82x = 332,682,326.27
5. Step 5: Solve for x
   x = 332,682,326.27/21,428.82
6. Step 6: Final answer
   x = 15,525.00