Finding the Fourth Proportional to 10,706.40, 16,061.13 and 3,311.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,706.40 : 16,061.13 = 3,311.49 : x
2. Step 2: Convert to fraction form
   10,706.40/16,061.13 = 3,311.49/x
3. Step 3: Cross multiply
   10,706.40x = 16,061.13 × 3,311.49
4. Step 4: Simplify right side
   10,706.40x = 53,186,271.38
5. Step 5: Solve for x
   x = 53,186,271.38/10,706.40
6. Step 6: Final answer
   x = 4,967.71