Finding the Fourth Proportional to 9,815.69, 13,545.80 and 5,339.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,815.69 : 13,545.80 = 5,339.52 : x
2. Step 2: Convert to fraction form
   9,815.69/13,545.80 = 5,339.52/x
3. Step 3: Cross multiply
   9,815.69x = 13,545.80 × 5,339.52
4. Step 4: Simplify right side
   9,815.69x = 72,328,043.32
5. Step 5: Solve for x
   x = 72,328,043.32/9,815.69
6. Step 6: Final answer
   x = 7,368.62