Finding the Fourth Proportional to 9,780.62, 13,496.88 and 5,304.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,780.62 : 13,496.88 = 5,304.29 : x
2. Step 2: Convert to fraction form
   9,780.62/13,496.88 = 5,304.29/x
3. Step 3: Cross multiply
   9,780.62x = 13,496.88 × 5,304.29
4. Step 4: Simplify right side
   9,780.62x = 71,591,365.62
5. Step 5: Solve for x
   x = 71,591,365.62/9,780.62
6. Step 6: Final answer
   x = 7,319.72