Finding the Fourth Proportional to 9,269.91, 13,822.18 and 8,239.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,269.91 : 13,822.18 = 8,239.59 : x
2. Step 2: Convert to fraction form
   9,269.91/13,822.18 = 8,239.59/x
3. Step 3: Cross multiply
   9,269.91x = 13,822.18 × 8,239.59
4. Step 4: Simplify right side
   9,269.91x = 113,889,075.51
5. Step 5: Solve for x
   x = 113,889,075.51/9,269.91
6. Step 6: Final answer
   x = 12,285.89