Finding the Fourth Proportional to 12,606.72, 18,912.88 and 3,842.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,606.72 : 18,912.88 = 3,842.30 : x
2. Step 2: Convert to fraction form
   12,606.72/18,912.88 = 3,842.30/x
3. Step 3: Cross multiply
   12,606.72x = 18,912.88 × 3,842.30
4. Step 4: Simplify right side
   12,606.72x = 72,668,958.82
5. Step 5: Solve for x
   x = 72,668,958.82/12,606.72
6. Step 6: Final answer
   x = 5,764.30