Finding the Fourth Proportional to 9,979.65, 13,771.35 and 5,503.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.65 : 13,771.35 = 5,503.41 : x
2. Step 2: Convert to fraction form
   9,979.65/13,771.35 = 5,503.41/x
3. Step 3: Cross multiply
   9,979.65x = 13,771.35 × 5,503.41
4. Step 4: Simplify right side
   9,979.65x = 75,789,385.30
5. Step 5: Solve for x
   x = 75,789,385.30/9,979.65
6. Step 6: Final answer
   x = 7,594.39