Finding the Fourth Proportional to 10,369.72, 15,554.52 and 2,578.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,369.72 : 15,554.52 = 2,578.48 : x
2. Step 2: Convert to fraction form
   10,369.72/15,554.52 = 2,578.48/x
3. Step 3: Cross multiply
   10,369.72x = 15,554.52 × 2,578.48
4. Step 4: Simplify right side
   10,369.72x = 40,107,018.73
5. Step 5: Solve for x
   x = 40,107,018.73/10,369.72
6. Step 6: Final answer
   x = 3,867.71