Finding the Fourth Proportional to 10,369.75, 15,554.69 and 2,578.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,369.75 : 15,554.69 = 2,578.56 : x
2. Step 2: Convert to fraction form
   10,369.75/15,554.69 = 2,578.56/x
3. Step 3: Cross multiply
   10,369.75x = 15,554.69 × 2,578.56
4. Step 4: Simplify right side
   10,369.75x = 40,108,756.55
5. Step 5: Solve for x
   x = 40,108,756.55/10,369.75
6. Step 6: Final answer
   x = 3,867.86