Finding the Fourth Proportional to 13,096.27, 18,073.49 and 7,720.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,096.27 : 18,073.49 = 7,720.30 : x
2. Step 2: Convert to fraction form
   13,096.27/18,073.49 = 7,720.30/x
3. Step 3: Cross multiply
   13,096.27x = 18,073.49 × 7,720.30
4. Step 4: Simplify right side
   13,096.27x = 139,532,764.85
5. Step 5: Solve for x
   x = 139,532,764.85/13,096.27
6. Step 6: Final answer
   x = 10,654.39