Finding the Fourth Proportional to 12,996.45, 19,496.73 and 4,229.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,996.45 : 19,496.73 = 4,229.31 : x
2. Step 2: Convert to fraction form
   12,996.45/19,496.73 = 4,229.31/x
3. Step 3: Cross multiply
   12,996.45x = 19,496.73 × 4,229.31
4. Step 4: Simplify right side
   12,996.45x = 82,457,715.16
5. Step 5: Solve for x
   x = 82,457,715.16/12,996.45
6. Step 6: Final answer
   x = 6,344.63