Finding the Fourth Proportional to 9,175.09, 12,662.41 and 5,196.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,175.09 : 12,662.41 = 5,196.91 : x
2. Step 2: Convert to fraction form
   9,175.09/12,662.41 = 5,196.91/x
3. Step 3: Cross multiply
   9,175.09x = 12,662.41 × 5,196.91
4. Step 4: Simplify right side
   9,175.09x = 65,805,405.15
5. Step 5: Solve for x
   x = 65,805,405.15/9,175.09
6. Step 6: Final answer
   x = 7,172.18