Finding the Fourth Proportional to 12,456.27, 18,689.40 and 5,061.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.27 : 18,689.40 = 5,061.30 : x
2. Step 2: Convert to fraction form
   12,456.27/18,689.40 = 5,061.30/x
3. Step 3: Cross multiply
   12,456.27x = 18,689.40 × 5,061.30
4. Step 4: Simplify right side
   12,456.27x = 94,592,660.22
5. Step 5: Solve for x
   x = 94,592,660.22/12,456.27
6. Step 6: Final answer
   x = 7,593.98