Finding the Fourth Proportional to 9,062.80, 12,195.90 and 9,062.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,062.80 : 12,195.90 = 9,062.80 : x
2. Step 2: Convert to fraction form
   9,062.80/12,195.90 = 9,062.80/x
3. Step 3: Cross multiply
   9,062.80x = 12,195.90 × 9,062.80
4. Step 4: Simplify right side
   9,062.80x = 110,529,002.52
5. Step 5: Solve for x
   x = 110,529,002.52/9,062.80
6. Step 6: Final answer
   x = 12,195.90