Finding the Fourth Proportional to 9,173.51, 12,661.71 and 5,196.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173.51 : 12,661.71 = 5,196.97 : x
2. Step 2: Convert to fraction form
   9,173.51/12,661.71 = 5,196.97/x
3. Step 3: Cross multiply
   9,173.51x = 12,661.71 × 5,196.97
4. Step 4: Simplify right side
   9,173.51x = 65,802,463.71
5. Step 5: Solve for x
   x = 65,802,463.71/9,173.51
6. Step 6: Final answer
   x = 7,173.10