Finding the Fourth Proportional to 11,399.71, 17,094.54 and 5,159.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,399.71 : 17,094.54 = 5,159.47 : x
2. Step 2: Convert to fraction form
   11,399.71/17,094.54 = 5,159.47/x
3. Step 3: Cross multiply
   11,399.71x = 17,094.54 × 5,159.47
4. Step 4: Simplify right side
   11,399.71x = 88,198,766.29
5. Step 5: Solve for x
   x = 88,198,766.29/11,399.71
6. Step 6: Final answer
   x = 7,736.93