Finding the Fourth Proportional to 12,280.56, 18,409.41 and 4,483.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.56 : 18,409.41 = 4,483.50 : x
2. Step 2: Convert to fraction form
   12,280.56/18,409.41 = 4,483.50/x
3. Step 3: Cross multiply
   12,280.56x = 18,409.41 × 4,483.50
4. Step 4: Simplify right side
   12,280.56x = 82,538,589.74
5. Step 5: Solve for x
   x = 82,538,589.74/12,280.56
6. Step 6: Final answer
   x = 6,721.08