Finding the Fourth Proportional to 15,697, 21,654.24 and 10,396.27

Step by Step Solution

1. Step 1: Write the proportion equation
   15,697 : 21,654.24 = 10,396.27 : x
2. Step 2: Convert to fraction form
   15,697/21,654.24 = 10,396.27/x
3. Step 3: Cross multiply
   15,697x = 21,654.24 × 10,396.27
4. Step 4: Simplify right side
   15,697x = 225,123,325.68
5. Step 5: Solve for x
   x = 225,123,325.68/15,697
6. Step 6: Final answer
   x = 14,341.81