Finding the Fourth Proportional to 9,975.96, 13,766.85 and 5,499.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,975.96 : 13,766.85 = 5,499.72 : x
2. Step 2: Convert to fraction form
   9,975.96/13,766.85 = 5,499.72/x
3. Step 3: Cross multiply
   9,975.96x = 13,766.85 × 5,499.72
4. Step 4: Simplify right side
   9,975.96x = 75,713,820.28
5. Step 5: Solve for x
   x = 75,713,820.28/9,975.96
6. Step 6: Final answer
   x = 7,589.63