Finding the Fourth Proportional to 12,999.72, 19,502.76 and 4,234.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,999.72 : 19,502.76 = 4,234.68 : x
2. Step 2: Convert to fraction form
   12,999.72/19,502.76 = 4,234.68/x
3. Step 3: Cross multiply
   12,999.72x = 19,502.76 × 4,234.68
4. Step 4: Simplify right side
   12,999.72x = 82,587,947.72
5. Step 5: Solve for x
   x = 82,587,947.72/12,999.72
6. Step 6: Final answer
   x = 6,353.06