Finding the Fourth Proportional to 12,760.80, 19,139.68 and 3,401.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,760.80 : 19,139.68 = 3,401.52 : x
2. Step 2: Convert to fraction form
   12,760.80/19,139.68 = 3,401.52/x
3. Step 3: Cross multiply
   12,760.80x = 19,139.68 × 3,401.52
4. Step 4: Simplify right side
   12,760.80x = 65,104,036.74
5. Step 5: Solve for x
   x = 65,104,036.74/12,760.80
6. Step 6: Final answer
   x = 5,101.88