Finding the Fourth Proportional to 12,071.72, 18,105.12 and 3,305.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,071.72 : 18,105.12 = 3,305.96 : x
2. Step 2: Convert to fraction form
   12,071.72/18,105.12 = 3,305.96/x
3. Step 3: Cross multiply
   12,071.72x = 18,105.12 × 3,305.96
4. Step 4: Simplify right side
   12,071.72x = 59,854,802.52
5. Step 5: Solve for x
   x = 59,854,802.52/12,071.72
6. Step 6: Final answer
   x = 4,958.27