Finding the Fourth Proportional to 12,315.96, 18,476.64 and 3,996.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.96 : 18,476.64 = 3,996.81 : x
2. Step 2: Convert to fraction form
   12,315.96/18,476.64 = 3,996.81/x
3. Step 3: Cross multiply
   12,315.96x = 18,476.64 × 3,996.81
4. Step 4: Simplify right side
   12,315.96x = 73,847,619.52
5. Step 5: Solve for x
   x = 73,847,619.52/12,315.96
6. Step 6: Final answer
   x = 5,996.09