Finding the Fourth Proportional to 13,494.69, 20,247.89 and 7,247.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,494.69 : 20,247.89 = 7,247.42 : x
2. Step 2: Convert to fraction form
   13,494.69/20,247.89 = 7,247.42/x
3. Step 3: Cross multiply
   13,494.69x = 20,247.89 × 7,247.42
4. Step 4: Simplify right side
   13,494.69x = 146,744,962.94
5. Step 5: Solve for x
   x = 146,744,962.94/13,494.69
6. Step 6: Final answer
   x = 10,874.27