Finding the Fourth Proportional to 9,174.79, 12,661.26 and 5,196.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,174.79 : 12,661.26 = 5,196.27 : x
2. Step 2: Convert to fraction form
   9,174.79/12,661.26 = 5,196.27/x
3. Step 3: Cross multiply
   9,174.79x = 12,661.26 × 5,196.27
4. Step 4: Simplify right side
   9,174.79x = 65,791,325.50
5. Step 5: Solve for x
   x = 65,791,325.50/9,174.79
6. Step 6: Final answer
   x = 7,170.88