Finding the Fourth Proportional to 9,804.50, 13,530.21 and 5,328.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,804.50 : 13,530.21 = 5,328.30 : x
2. Step 2: Convert to fraction form
   9,804.50/13,530.21 = 5,328.30/x
3. Step 3: Cross multiply
   9,804.50x = 13,530.21 × 5,328.30
4. Step 4: Simplify right side
   9,804.50x = 72,093,017.94
5. Step 5: Solve for x
   x = 72,093,017.94/9,804.50
6. Step 6: Final answer
   x = 7,353.06