Finding the Fourth Proportional to 10,516.70, 15,747.69 and 10,205.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,516.70 : 15,747.69 = 10,205.05 : x
2. Step 2: Convert to fraction form
   10,516.70/15,747.69 = 10,205.05/x
3. Step 3: Cross multiply
   10,516.70x = 15,747.69 × 10,205.05
4. Step 4: Simplify right side
   10,516.70x = 160,705,963.83
5. Step 5: Solve for x
   x = 160,705,963.83/10,516.70
6. Step 6: Final answer
   x = 15,281.03