Finding the Fourth Proportional to 12,109.24, 18,166.78 and 4,210.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.24 : 18,166.78 = 4,210.61 : x
2. Step 2: Convert to fraction form
   12,109.24/18,166.78 = 4,210.61/x
3. Step 3: Cross multiply
   12,109.24x = 18,166.78 × 4,210.61
4. Step 4: Simplify right side
   12,109.24x = 76,493,225.54
5. Step 5: Solve for x
   x = 76,493,225.54/12,109.24
6. Step 6: Final answer
   x = 6,316.93