Finding the Fourth Proportional to 13,717.89, 18,930.78 and 7,430.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,717.89 : 18,930.78 = 7,430.27 : x
2. Step 2: Convert to fraction form
   13,717.89/18,930.78 = 7,430.27/x
3. Step 3: Cross multiply
   13,717.89x = 18,930.78 × 7,430.27
4. Step 4: Simplify right side
   13,717.89x = 140,660,806.71
5. Step 5: Solve for x
   x = 140,660,806.71/13,717.89
6. Step 6: Final answer
   x = 10,253.82