Finding the Fourth Proportional to 13,718.05, 18,930.98 and 7,430.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,718.05 : 18,930.98 = 7,430.42 : x
2. Step 2: Convert to fraction form
   13,718.05/18,930.98 = 7,430.42/x
3. Step 3: Cross multiply
   13,718.05x = 18,930.98 × 7,430.42
4. Step 4: Simplify right side
   13,718.05x = 140,665,132.41
5. Step 5: Solve for x
   x = 140,665,132.41/13,718.05
6. Step 6: Final answer
   x = 10,254.02