Finding the Fourth Proportional to 9,174.83, 12,661.31 and 5,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,174.83 : 12,661.31 = 5,196.72 : x
2. Step 2: Convert to fraction form
   9,174.83/12,661.31 = 5,196.72/x
3. Step 3: Cross multiply
   9,174.83x = 12,661.31 × 5,196.72
4. Step 4: Simplify right side
   9,174.83x = 65,797,295.90
5. Step 5: Solve for x
   x = 65,797,295.90/9,174.83
6. Step 6: Final answer
   x = 7,171.50