Finding the Fourth Proportional to 12,317.09, 18,478.33 and 3,997.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,317.09 : 18,478.33 = 3,997.94 : x
2. Step 2: Convert to fraction form
   12,317.09/18,478.33 = 3,997.94/x
3. Step 3: Cross multiply
   12,317.09x = 18,478.33 × 3,997.94
4. Step 4: Simplify right side
   12,317.09x = 73,875,152.25
5. Step 5: Solve for x
   x = 73,875,152.25/12,317.09
6. Step 6: Final answer
   x = 5,997.78