Finding the Fourth Proportional to 21,428.00, 32,162.72 and 10,342.49

Step by Step Solution

1. Step 1: Write the proportion equation
   21,428.00 : 32,162.72 = 10,342.49 : x
2. Step 2: Convert to fraction form
   21,428.00/32,162.72 = 10,342.49/x
3. Step 3: Cross multiply
   21,428.00x = 32,162.72 × 10,342.49
4. Step 4: Simplify right side
   21,428.00x = 332,642,475.02
5. Step 5: Solve for x
   x = 332,642,475.02/21,428.00
6. Step 6: Final answer
   x = 15,523.73