Finding the Fourth Proportional to 12,763.58, 19,143.85 and 3,404.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,763.58 : 19,143.85 = 3,404.30 : x
2. Step 2: Convert to fraction form
   12,763.58/19,143.85 = 3,404.30/x
3. Step 3: Cross multiply
   12,763.58x = 19,143.85 × 3,404.30
4. Step 4: Simplify right side
   12,763.58x = 65,171,408.56
5. Step 5: Solve for x
   x = 65,171,408.56/12,763.58
6. Step 6: Final answer
   x = 5,106.04