Finding the Fourth Proportional to 12,456.05, 18,688.62 and 5,795.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.05 : 18,688.62 = 5,795.72 : x
2. Step 2: Convert to fraction form
   12,456.05/18,688.62 = 5,795.72/x
3. Step 3: Cross multiply
   12,456.05x = 18,688.62 × 5,795.72
4. Step 4: Simplify right side
   12,456.05x = 108,314,007.08
5. Step 5: Solve for x
   x = 108,314,007.08/12,456.05
6. Step 6: Final answer
   x = 8,695.70