Finding the Fourth Proportional to 9,979.62, 13,771.82 and 5,503.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.62 : 13,771.82 = 5,503.48 : x
2. Step 2: Convert to fraction form
   9,979.62/13,771.82 = 5,503.48/x
3. Step 3: Cross multiply
   9,979.62x = 13,771.82 × 5,503.48
4. Step 4: Simplify right side
   9,979.62x = 75,792,935.93
5. Step 5: Solve for x
   x = 75,792,935.93/9,979.62
6. Step 6: Final answer
   x = 7,594.77