Finding the Fourth Proportional to 12,506.48, 18,766.56 and 4,189.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,506.48 : 18,766.56 = 4,189.04 : x
2. Step 2: Convert to fraction form
   12,506.48/18,766.56 = 4,189.04/x
3. Step 3: Cross multiply
   12,506.48x = 18,766.56 × 4,189.04
4. Step 4: Simplify right side
   12,506.48x = 78,613,870.50
5. Step 5: Solve for x
   x = 78,613,870.50/12,506.48
6. Step 6: Final answer
   x = 6,285.85