Finding the Fourth Proportional to 12,642.62, 18,964.37 and 4,744.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,642.62 : 18,964.37 = 4,744.34 : x
2. Step 2: Convert to fraction form
   12,642.62/18,964.37 = 4,744.34/x
3. Step 3: Cross multiply
   12,642.62x = 18,964.37 × 4,744.34
4. Step 4: Simplify right side
   12,642.62x = 89,973,300.62
5. Step 5: Solve for x
   x = 89,973,300.62/12,642.62
6. Step 6: Final answer
   x = 7,116.67