Finding the Fourth Proportional to 11,356, 17,019.58 and 5,109.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,356 : 17,019.58 = 5,109.32 : x
2. Step 2: Convert to fraction form
   11,356/17,019.58 = 5,109.32/x
3. Step 3: Cross multiply
   11,356x = 17,019.58 × 5,109.32
4. Step 4: Simplify right side
   11,356x = 86,958,480.49
5. Step 5: Solve for x
   x = 86,958,480.49/11,356
6. Step 6: Final answer
   x = 7,657.49