Finding the Fourth Proportional to 9,975.74, 13,765.90 and 5,499.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,975.74 : 13,765.90 = 5,499.53 : x
2. Step 2: Convert to fraction form
   9,975.74/13,765.90 = 5,499.53/x
3. Step 3: Cross multiply
   9,975.74x = 13,765.90 × 5,499.53
4. Step 4: Simplify right side
   9,975.74x = 75,705,980.03
5. Step 5: Solve for x
   x = 75,705,980.03/9,975.74
6. Step 6: Final answer
   x = 7,589.01