Finding the Fourth Proportional to 11,971.92, 17,958.02 and 3,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,971.92 : 17,958.02 = 3,206.72 : x
2. Step 2: Convert to fraction form
   11,971.92/17,958.02 = 3,206.72/x
3. Step 3: Cross multiply
   11,971.92x = 17,958.02 × 3,206.72
4. Step 4: Simplify right side
   11,971.92x = 57,586,341.89
5. Step 5: Solve for x
   x = 57,586,341.89/11,971.92
6. Step 6: Final answer
   x = 4,810.12