Finding the Fourth Proportional to 12,647.12, 18,964.83 and 7,383.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.12 : 18,964.83 = 7,383.67 : x
2. Step 2: Convert to fraction form
   12,647.12/18,964.83 = 7,383.67/x
3. Step 3: Cross multiply
   12,647.12x = 18,964.83 × 7,383.67
4. Step 4: Simplify right side
   12,647.12x = 140,030,026.60
5. Step 5: Solve for x
   x = 140,030,026.60/12,647.12
6. Step 6: Final answer
   x = 11,072.09