Finding the Fourth Proportional to 5,322.43, 7,978.24 and 2,545.03

Step by Step Solution

1. Step 1: Write the proportion equation
   5,322.43 : 7,978.24 = 2,545.03 : x
2. Step 2: Convert to fraction form
   5,322.43/7,978.24 = 2,545.03/x
3. Step 3: Cross multiply
   5,322.43x = 7,978.24 × 2,545.03
4. Step 4: Simplify right side
   5,322.43x = 20,304,860.15
5. Step 5: Solve for x
   x = 20,304,860.15/5,322.43
6. Step 6: Final answer
   x = 3,814.96