Finding the Fourth Proportional to 9,975.95, 13,766.74 and 5,499.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,975.95 : 13,766.74 = 5,499.89 : x
2. Step 2: Convert to fraction form
   9,975.95/13,766.74 = 5,499.89/x
3. Step 3: Cross multiply
   9,975.95x = 13,766.74 × 5,499.89
4. Step 4: Simplify right side
   9,975.95x = 75,715,576.33
5. Step 5: Solve for x
   x = 75,715,576.33/9,975.95
6. Step 6: Final answer
   x = 7,589.81