Finding the Fourth Proportional to 3,967.56, 5,472.81 and 2,623.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.56 : 5,472.81 = 2,623.17 : x
2. Step 2: Convert to fraction form
   3,967.56/5,472.81 = 2,623.17/x
3. Step 3: Cross multiply
   3,967.56x = 5,472.81 × 2,623.17
4. Step 4: Simplify right side
   3,967.56x = 14,356,111.01
5. Step 5: Solve for x
   x = 14,356,111.01/3,967.56
6. Step 6: Final answer
   x = 3,618.37