Finding the Fourth Proportional to 9,175.65, 12,662.63 and 5,196.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,175.65 : 12,662.63 = 5,196.70 : x
2. Step 2: Convert to fraction form
   9,175.65/12,662.63 = 5,196.70/x
3. Step 3: Cross multiply
   9,175.65x = 12,662.63 × 5,196.70
4. Step 4: Simplify right side
   9,175.65x = 65,803,863.34
5. Step 5: Solve for x
   x = 65,803,863.34/9,175.65
6. Step 6: Final answer
   x = 7,171.58