Finding the Fourth Proportional to 11,931.77, 17,870.40 and 5,696.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,931.77 : 17,870.40 = 5,696.17 : x
2. Step 2: Convert to fraction form
   11,931.77/17,870.40 = 5,696.17/x
3. Step 3: Cross multiply
   11,931.77x = 17,870.40 × 5,696.17
4. Step 4: Simplify right side
   11,931.77x = 101,792,791.69
5. Step 5: Solve for x
   x = 101,792,791.69/11,931.77
6. Step 6: Final answer
   x = 8,531.24