Finding the Fourth Proportional to 11,706.72, 17,556.42 and 3,913.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,706.72 : 17,556.42 = 3,913.71 : x
2. Step 2: Convert to fraction form
   11,706.72/17,556.42 = 3,913.71/x
3. Step 3: Cross multiply
   11,706.72x = 17,556.42 × 3,913.71
4. Step 4: Simplify right side
   11,706.72x = 68,710,648.74
5. Step 5: Solve for x
   x = 68,710,648.74/11,706.72
6. Step 6: Final answer
   x = 5,869.34