Finding the Fourth Proportional to 12,404.54, 18,613.60 and 4,912.65

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.54 : 18,613.60 = 4,912.65 : x
2. Step 2: Convert to fraction form
   12,404.54/18,613.60 = 4,912.65/x
3. Step 3: Cross multiply
   12,404.54x = 18,613.60 × 4,912.65
4. Step 4: Simplify right side
   12,404.54x = 91,442,089.76
5. Step 5: Solve for x
   x = 91,442,089.76/12,404.54
6. Step 6: Final answer
   x = 7,371.66