Finding the Fourth Proportional to 12,898.50, 19,340.22 and 4,011.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,898.50 : 19,340.22 = 4,011.42 : x
2. Step 2: Convert to fraction form
   12,898.50/19,340.22 = 4,011.42/x
3. Step 3: Cross multiply
   12,898.50x = 19,340.22 × 4,011.42
4. Step 4: Simplify right side
   12,898.50x = 77,581,745.31
5. Step 5: Solve for x
   x = 77,581,745.31/12,898.50
6. Step 6: Final answer
   x = 6,014.79