Finding the Fourth Proportional to 12,315.56, 18,473.22 and 3,081.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.56 : 18,473.22 = 3,081.56 : x
2. Step 2: Convert to fraction form
   12,315.56/18,473.22 = 3,081.56/x
3. Step 3: Cross multiply
   12,315.56x = 18,473.22 × 3,081.56
4. Step 4: Simplify right side
   12,315.56x = 56,926,335.82
5. Step 5: Solve for x
   x = 56,926,335.82/12,315.56
6. Step 6: Final answer
   x = 4,622.31