Finding the Fourth Proportional to 13,717.05, 18,929.60 and 7,429.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,717.05 : 18,929.60 = 7,429.42 : x
2. Step 2: Convert to fraction form
   13,717.05/18,929.60 = 7,429.42/x
3. Step 3: Cross multiply
   13,717.05x = 18,929.60 × 7,429.42
4. Step 4: Simplify right side
   13,717.05x = 140,635,948.83
5. Step 5: Solve for x
   x = 140,635,948.83/13,717.05
6. Step 6: Final answer
   x = 10,252.64