Finding the Fourth Proportional to 11,415.33, 17,106.71 and 5,159.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,415.33 : 17,106.71 = 5,159.79 : x
2. Step 2: Convert to fraction form
   11,415.33/17,106.71 = 5,159.79/x
3. Step 3: Cross multiply
   11,415.33x = 17,106.71 × 5,159.79
4. Step 4: Simplify right side
   11,415.33x = 88,267,005.39
5. Step 5: Solve for x
   x = 88,267,005.39/11,415.33
6. Step 6: Final answer
   x = 7,732.32