Finding the Fourth Proportional to 12,072.48, 18,111.32 and 4,956.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072.48 : 18,111.32 = 4,956.73 : x
2. Step 2: Convert to fraction form
   12,072.48/18,111.32 = 4,956.73/x
3. Step 3: Cross multiply
   12,072.48x = 18,111.32 × 4,956.73
4. Step 4: Simplify right side
   12,072.48x = 89,772,871.71
5. Step 5: Solve for x
   x = 89,772,871.71/12,072.48
6. Step 6: Final answer
   x = 7,436.16