Finding the Fourth Proportional to 11,806.28, 17,696.93 and 3,906.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,806.28 : 17,696.93 = 3,906.75 : x
2. Step 2: Convert to fraction form
   11,806.28/17,696.93 = 3,906.75/x
3. Step 3: Cross multiply
   11,806.28x = 17,696.93 × 3,906.75
4. Step 4: Simplify right side
   11,806.28x = 69,137,461.74
5. Step 5: Solve for x
   x = 69,137,461.74/11,806.28
6. Step 6: Final answer
   x = 5,855.99