Finding the Fourth Proportional to 10,571.78, 15,853.59 and 3,174.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,571.78 : 15,853.59 = 3,174.50 : x
2. Step 2: Convert to fraction form
   10,571.78/15,853.59 = 3,174.50/x
3. Step 3: Cross multiply
   10,571.78x = 15,853.59 × 3,174.50
4. Step 4: Simplify right side
   10,571.78x = 50,327,221.46
5. Step 5: Solve for x
   x = 50,327,221.46/10,571.78
6. Step 6: Final answer
   x = 4,760.52