Finding the Fourth Proportional to 10,985.06, 16,474.17 and 3,964.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,985.06 : 16,474.17 = 3,964.16 : x
2. Step 2: Convert to fraction form
   10,985.06/16,474.17 = 3,964.16/x
3. Step 3: Cross multiply
   10,985.06x = 16,474.17 × 3,964.16
4. Step 4: Simplify right side
   10,985.06x = 65,306,163.38
5. Step 5: Solve for x
   x = 65,306,163.38/10,985.06
6. Step 6: Final answer
   x = 5,945.00