Finding the Fourth Proportional to 10,647.20, 15,973.91 and 3,150.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,647.20 : 15,973.91 = 3,150.96 : x
2. Step 2: Convert to fraction form
   10,647.20/15,973.91 = 3,150.96/x
3. Step 3: Cross multiply
   10,647.20x = 15,973.91 × 3,150.96
4. Step 4: Simplify right side
   10,647.20x = 50,333,151.45
5. Step 5: Solve for x
   x = 50,333,151.45/10,647.20
6. Step 6: Final answer
   x = 4,727.36