Finding the Fourth Proportional to 9,976.15, 13,766.53 and 5,499.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.15 : 13,766.53 = 5,499.90 : x
2. Step 2: Convert to fraction form
   9,976.15/13,766.53 = 5,499.90/x
3. Step 3: Cross multiply
   9,976.15x = 13,766.53 × 5,499.90
4. Step 4: Simplify right side
   9,976.15x = 75,714,538.35
5. Step 5: Solve for x
   x = 75,714,538.35/9,976.15
6. Step 6: Final answer
   x = 7,589.55