Finding the Fourth Proportional to 11,597.85, 17,399.91 and 8,270.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,597.85 : 17,399.91 = 8,270.30 : x
2. Step 2: Convert to fraction form
   11,597.85/17,399.91 = 8,270.30/x
3. Step 3: Cross multiply
   11,597.85x = 17,399.91 × 8,270.30
4. Step 4: Simplify right side
   11,597.85x = 143,902,475.67
5. Step 5: Solve for x
   x = 143,902,475.67/11,597.85
6. Step 6: Final answer
   x = 12,407.69