Finding the Fourth Proportional to 5,045.42, 7,561.56 and 2,578.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,045.42 : 7,561.56 = 2,578.16 : x
2. Step 2: Convert to fraction form
   5,045.42/7,561.56 = 2,578.16/x
3. Step 3: Cross multiply
   5,045.42x = 7,561.56 × 2,578.16
4. Step 4: Simplify right side
   5,045.42x = 19,494,911.53
5. Step 5: Solve for x
   x = 19,494,911.53/5,045.42
6. Step 6: Final answer
   x = 3,863.88