Finding the Fourth Proportional to 13,419.50, 18,519.23 and 7,450.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,419.50 : 18,519.23 = 7,450.88 : x
2. Step 2: Convert to fraction form
   13,419.50/18,519.23 = 7,450.88/x
3. Step 3: Cross multiply
   13,419.50x = 18,519.23 × 7,450.88
4. Step 4: Simplify right side
   13,419.50x = 137,984,486.45
5. Step 5: Solve for x
   x = 137,984,486.45/13,419.50
6. Step 6: Final answer
   x = 10,282.39