Finding the Fourth Proportional to 11,005.82, 16,510.46 and 3,985.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,005.82 : 16,510.46 = 3,985.10 : x
2. Step 2: Convert to fraction form
   11,005.82/16,510.46 = 3,985.10/x
3. Step 3: Cross multiply
   11,005.82x = 16,510.46 × 3,985.10
4. Step 4: Simplify right side
   11,005.82x = 65,795,804.79
5. Step 5: Solve for x
   x = 65,795,804.79/11,005.82
6. Step 6: Final answer
   x = 5,978.27