Finding the Fourth Proportional to 17,665.24, 24,363.82 and 15,536.20

Step by Step Solution

1. Step 1: Write the proportion equation
   17,665.24 : 24,363.82 = 15,536.20 : x
2. Step 2: Convert to fraction form
   17,665.24/24,363.82 = 15,536.20/x
3. Step 3: Cross multiply
   17,665.24x = 24,363.82 × 15,536.20
4. Step 4: Simplify right side
   17,665.24x = 378,521,180.28
5. Step 5: Solve for x
   x = 378,521,180.28/17,665.24
6. Step 6: Final answer
   x = 21,427.46