Finding the Fourth Proportional to 12,215.07, 18,326.12 and 3,895.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,215.07 : 18,326.12 = 3,895.76 : x
2. Step 2: Convert to fraction form
   12,215.07/18,326.12 = 3,895.76/x
3. Step 3: Cross multiply
   12,215.07x = 18,326.12 × 3,895.76
4. Step 4: Simplify right side
   12,215.07x = 71,394,191.59
5. Step 5: Solve for x
   x = 71,394,191.59/12,215.07
6. Step 6: Final answer
   x = 5,844.76