Finding the Fourth Proportional to 9,815.35, 13,545.09 and 5,339.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,815.35 : 13,545.09 = 5,339.14 : x
2. Step 2: Convert to fraction form
   9,815.35/13,545.09 = 5,339.14/x
3. Step 3: Cross multiply
   9,815.35x = 13,545.09 × 5,339.14
4. Step 4: Simplify right side
   9,815.35x = 72,319,131.82
5. Step 5: Solve for x
   x = 72,319,131.82/9,815.35
6. Step 6: Final answer
   x = 7,367.96