Finding the Fourth Proportional to 9,176.64, 12,661.60 and 5,196.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,176.64 : 12,661.60 = 5,196.92 : x
2. Step 2: Convert to fraction form
   9,176.64/12,661.60 = 5,196.92/x
3. Step 3: Cross multiply
   9,176.64x = 12,661.60 × 5,196.92
4. Step 4: Simplify right side
   9,176.64x = 65,801,322.27
5. Step 5: Solve for x
   x = 65,801,322.27/9,176.64
6. Step 6: Final answer
   x = 7,170.52