Finding the Fourth Proportional to 13,717.50, 18,930.15 and 7,429.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,717.50 : 18,930.15 = 7,429.88 : x
2. Step 2: Convert to fraction form
   13,717.50/18,930.15 = 7,429.88/x
3. Step 3: Cross multiply
   13,717.50x = 18,930.15 × 7,429.88
4. Step 4: Simplify right side
   13,717.50x = 140,648,648.23
5. Step 5: Solve for x
   x = 140,648,648.23/13,717.50
6. Step 6: Final answer
   x = 10,253.23