Finding the Fourth Proportional to 9,976.12, 13,766.98 and 5,499.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.12 : 13,766.98 = 5,499.88 : x
2. Step 2: Convert to fraction form
   9,976.12/13,766.98 = 5,499.88/x
3. Step 3: Cross multiply
   9,976.12x = 13,766.98 × 5,499.88
4. Step 4: Simplify right side
   9,976.12x = 75,716,737.96
5. Step 5: Solve for x
   x = 75,716,737.96/9,976.12
6. Step 6: Final answer
   x = 7,589.80