Finding the Fourth Proportional to 15,109.82, 20,850.72 and 8,394.98

Step by Step Solution

1. Step 1: Write the proportion equation
   15,109.82 : 20,850.72 = 8,394.98 : x
2. Step 2: Convert to fraction form
   15,109.82/20,850.72 = 8,394.98/x
3. Step 3: Cross multiply
   15,109.82x = 20,850.72 × 8,394.98
4. Step 4: Simplify right side
   15,109.82x = 175,041,377.39
5. Step 5: Solve for x
   x = 175,041,377.39/15,109.82
6. Step 6: Final answer
   x = 11,584.61