Finding the Fourth Proportional to 9,805.29, 13,531.03 and 5,328.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,805.29 : 13,531.03 = 5,328.89 : x
2. Step 2: Convert to fraction form
   9,805.29/13,531.03 = 5,328.89/x
3. Step 3: Cross multiply
   9,805.29x = 13,531.03 × 5,328.89
4. Step 4: Simplify right side
   9,805.29x = 72,105,390.96
5. Step 5: Solve for x
   x = 72,105,390.96/9,805.29
6. Step 6: Final answer
   x = 7,353.72