Finding the Fourth Proportional to 5,050.89, 7,578.78 and 3,809.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,050.89 : 7,578.78 = 3,809.58 : x
2. Step 2: Convert to fraction form
   5,050.89/7,578.78 = 3,809.58/x
3. Step 3: Cross multiply
   5,050.89x = 7,578.78 × 3,809.58
4. Step 4: Simplify right side
   5,050.89x = 28,871,968.71
5. Step 5: Solve for x
   x = 28,871,968.71/5,050.89
6. Step 6: Final answer
   x = 5,716.21