Finding the Fourth Proportional to 9,165.08, 12,647.04 and 5,388.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,165.08 : 12,647.04 = 5,388.37 : x
2. Step 2: Convert to fraction form
   9,165.08/12,647.04 = 5,388.37/x
3. Step 3: Cross multiply
   9,165.08x = 12,647.04 × 5,388.37
4. Step 4: Simplify right side
   9,165.08x = 68,146,930.92
5. Step 5: Solve for x
   x = 68,146,930.92/9,165.08
6. Step 6: Final answer
   x = 7,435.50