Finding the Fourth Proportional to 7,225.53, 9,975.83 and 5,543.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,225.53 : 9,975.83 = 5,543.75 : x
2. Step 2: Convert to fraction form
   7,225.53/9,975.83 = 5,543.75/x
3. Step 3: Cross multiply
   7,225.53x = 9,975.83 × 5,543.75
4. Step 4: Simplify right side
   7,225.53x = 55,303,429.96
5. Step 5: Solve for x
   x = 55,303,429.96/7,225.53
6. Step 6: Final answer
   x = 7,653.89