Finding the Fourth Proportional to 9,979.14, 13,771.29 and 5,503.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.14 : 13,771.29 = 5,503.05 : x
2. Step 2: Convert to fraction form
   9,979.14/13,771.29 = 5,503.05/x
3. Step 3: Cross multiply
   9,979.14x = 13,771.29 × 5,503.05
4. Step 4: Simplify right side
   9,979.14x = 75,784,097.43
5. Step 5: Solve for x
   x = 75,784,097.43/9,979.14
6. Step 6: Final answer
   x = 7,594.25