Finding the Fourth Proportional to 12,109.82, 18,168.17 and 4,716.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.82 : 18,168.17 = 4,716.39 : x
2. Step 2: Convert to fraction form
   12,109.82/18,168.17 = 4,716.39/x
3. Step 3: Cross multiply
   12,109.82x = 18,168.17 × 4,716.39
4. Step 4: Simplify right side
   12,109.82x = 85,688,259.65
5. Step 5: Solve for x
   x = 85,688,259.65/12,109.82
6. Step 6: Final answer
   x = 7,075.93