Finding the Fourth Proportional to 12,109.94, 18,167.40 and 5,085.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.94 : 18,167.40 = 5,085.82 : x
2. Step 2: Convert to fraction form
   12,109.94/18,167.40 = 5,085.82/x
3. Step 3: Cross multiply
   12,109.94x = 18,167.40 × 5,085.82
4. Step 4: Simplify right side
   12,109.94x = 92,396,148.98
5. Step 5: Solve for x
   x = 92,396,148.98/12,109.94
6. Step 6: Final answer
   x = 7,629.78