Finding the Fourth Proportional to 9,975.78, 13,766.02 and 5,499.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,975.78 : 13,766.02 = 5,499.52 : x
2. Step 2: Convert to fraction form
   9,975.78/13,766.02 = 5,499.52/x
3. Step 3: Cross multiply
   9,975.78x = 13,766.02 × 5,499.52
4. Step 4: Simplify right side
   9,975.78x = 75,706,502.31
5. Step 5: Solve for x
   x = 75,706,502.31/9,975.78
6. Step 6: Final answer
   x = 7,589.03