Finding the Fourth Proportional to 13,417.98, 18,517.98 and 7,450.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,417.98 : 18,517.98 = 7,450.80 : x
2. Step 2: Convert to fraction form
   13,417.98/18,517.98 = 7,450.80/x
3. Step 3: Cross multiply
   13,417.98x = 18,517.98 × 7,450.80
4. Step 4: Simplify right side
   13,417.98x = 137,973,765.38
5. Step 5: Solve for x
   x = 137,973,765.38/13,417.98
6. Step 6: Final answer
   x = 10,282.75