Finding the Fourth Proportional to 12,458.49, 18,685.58 and 4,665.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,458.49 : 18,685.58 = 4,665.69 : x
2. Step 2: Convert to fraction form
   12,458.49/18,685.58 = 4,665.69/x
3. Step 3: Cross multiply
   12,458.49x = 18,685.58 × 4,665.69
4. Step 4: Simplify right side
   12,458.49x = 87,181,100.42
5. Step 5: Solve for x
   x = 87,181,100.42/12,458.49
6. Step 6: Final answer
   x = 6,997.73