Finding the Fourth Proportional to 9,979.30, 13,771.53 and 5,503.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.30 : 13,771.53 = 5,503.23 : x
2. Step 2: Convert to fraction form
   9,979.30/13,771.53 = 5,503.23/x
3. Step 3: Cross multiply
   9,979.30x = 13,771.53 × 5,503.23
4. Step 4: Simplify right side
   9,979.30x = 75,787,897.04
5. Step 5: Solve for x
   x = 75,787,897.04/9,979.30
6. Step 6: Final answer
   x = 7,594.51