Finding the Fourth Proportional to 9,815.63, 13,545.27 and 5,339.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,815.63 : 13,545.27 = 5,339.30 : x
2. Step 2: Convert to fraction form
   9,815.63/13,545.27 = 5,339.30/x
3. Step 3: Cross multiply
   9,815.63x = 13,545.27 × 5,339.30
4. Step 4: Simplify right side
   9,815.63x = 72,322,192.38
5. Step 5: Solve for x
   x = 72,322,192.38/9,815.63
6. Step 6: Final answer
   x = 7,368.07