Finding the Fourth Proportional to 12,426.36, 18,607.86 and 12,057

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.36 : 18,607.86 = 12,057 : x
2. Step 2: Convert to fraction form
   12,426.36/18,607.86 = 12,057/x
3. Step 3: Cross multiply
   12,426.36x = 18,607.86 × 12,057
4. Step 4: Simplify right side
   12,426.36x = 224,354,968.02
5. Step 5: Solve for x
   x = 224,354,968.02/12,426.36
6. Step 6: Final answer
   x = 18,054.76