Finding the Fourth Proportional to 12,628.95, 18,945.55 and 3,861.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,628.95 : 18,945.55 = 3,861.82 : x
2. Step 2: Convert to fraction form
   12,628.95/18,945.55 = 3,861.82/x
3. Step 3: Cross multiply
   12,628.95x = 18,945.55 × 3,861.82
4. Step 4: Simplify right side
   12,628.95x = 73,164,303.90
5. Step 5: Solve for x
   x = 73,164,303.90/12,628.95
6. Step 6: Final answer
   x = 5,793.38