Finding the Fourth Proportional to 13,704.80, 18,912.69 and 7,417.17

Step by Step Solution

1. Step 1: Write the proportion equation
   13,704.80 : 18,912.69 = 7,417.17 : x
2. Step 2: Convert to fraction form
   13,704.80/18,912.69 = 7,417.17/x
3. Step 3: Cross multiply
   13,704.80x = 18,912.69 × 7,417.17
4. Step 4: Simplify right side
   13,704.80x = 140,278,636.89
5. Step 5: Solve for x
   x = 140,278,636.89/13,704.80
6. Step 6: Final answer
   x = 10,235.73