Finding the Fourth Proportional to 10,706.85, 16,061.81 and 3,311.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,706.85 : 16,061.81 = 3,311.87 : x
2. Step 2: Convert to fraction form
   10,706.85/16,061.81 = 3,311.87/x
3. Step 3: Cross multiply
   10,706.85x = 16,061.81 × 3,311.87
4. Step 4: Simplify right side
   10,706.85x = 53,194,529.82
5. Step 5: Solve for x
   x = 53,194,529.82/10,706.85
6. Step 6: Final answer
   x = 4,968.27