Finding the Fourth Proportional to 12,271.80, 17,759.55 and 12,271.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.80 : 17,759.55 = 12,271.80 : x
2. Step 2: Convert to fraction form
   12,271.80/17,759.55 = 12,271.80/x
3. Step 3: Cross multiply
   12,271.80x = 17,759.55 × 12,271.80
4. Step 4: Simplify right side
   12,271.80x = 217,941,645.69
5. Step 5: Solve for x
   x = 217,941,645.69/12,271.80
6. Step 6: Final answer
   x = 17,759.55