Finding the Fourth Proportional to 9,815.67, 13,545.43 and 5,339.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,815.67 : 13,545.43 = 5,339.53 : x
2. Step 2: Convert to fraction form
   9,815.67/13,545.43 = 5,339.53/x
3. Step 3: Cross multiply
   9,815.67x = 13,545.43 × 5,339.53
4. Step 4: Simplify right side
   9,815.67x = 72,326,233.43
5. Step 5: Solve for x
   x = 72,326,233.43/9,815.67
6. Step 6: Final answer
   x = 7,368.45