Finding the Fourth Proportional to 14,799.28, 20,404.56 and 12,436.24

Step by Step Solution

1. Step 1: Write the proportion equation
   14,799.28 : 20,404.56 = 12,436.24 : x
2. Step 2: Convert to fraction form
   14,799.28/20,404.56 = 12,436.24/x
3. Step 3: Cross multiply
   14,799.28x = 20,404.56 × 12,436.24
4. Step 4: Simplify right side
   14,799.28x = 253,756,005.25
5. Step 5: Solve for x
   x = 253,756,005.25/14,799.28
6. Step 6: Final answer
   x = 17,146.51