Finding the Fourth Proportional to 9,174.44, 12,661.43 and 5,196.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,174.44 : 12,661.43 = 5,196.15 : x
2. Step 2: Convert to fraction form
   9,174.44/12,661.43 = 5,196.15/x
3. Step 3: Cross multiply
   9,174.44x = 12,661.43 × 5,196.15
4. Step 4: Simplify right side
   9,174.44x = 65,790,663.51
5. Step 5: Solve for x
   x = 65,790,663.51/9,174.44
6. Step 6: Final answer
   x = 7,171.09