Finding the Fourth Proportional to 9,164.80, 12,804.80 and 9,164.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,164.80 : 12,804.80 = 9,164.80 : x
2. Step 2: Convert to fraction form
   9,164.80/12,804.80 = 9,164.80/x
3. Step 3: Cross multiply
   9,164.80x = 12,804.80 × 9,164.80
4. Step 4: Simplify right side
   9,164.80x = 117,353,431.04
5. Step 5: Solve for x
   x = 117,353,431.04/9,164.80
6. Step 6: Final answer
   x = 12,804.80