Finding the Fourth Proportional to 18,457.83, 25,462.94 and 12,081.61

Step by Step Solution

1. Step 1: Write the proportion equation
   18,457.83 : 25,462.94 = 12,081.61 : x
2. Step 2: Convert to fraction form
   18,457.83/25,462.94 = 12,081.61/x
3. Step 3: Cross multiply
   18,457.83x = 25,462.94 × 12,081.61
4. Step 4: Simplify right side
   18,457.83x = 307,633,310.53
5. Step 5: Solve for x
   x = 307,633,310.53/18,457.83
6. Step 6: Final answer
   x = 16,666.82