Finding the Fourth Proportional to 9,976.26, 13,766.60 and 5,499.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.26 : 13,766.60 = 5,499.77 : x
2. Step 2: Convert to fraction form
   9,976.26/13,766.60 = 5,499.77/x
3. Step 3: Cross multiply
   9,976.26x = 13,766.60 × 5,499.77
4. Step 4: Simplify right side
   9,976.26x = 75,713,064.85
5. Step 5: Solve for x
   x = 75,713,064.85/9,976.26
6. Step 6: Final answer
   x = 7,589.32