Finding the Fourth Proportional to 19,863.61, 27,411.98 and 10,789.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,863.61 : 27,411.98 = 10,789.15 : x
2. Step 2: Convert to fraction form
   19,863.61/27,411.98 = 10,789.15/x
3. Step 3: Cross multiply
   19,863.61x = 27,411.98 × 10,789.15
4. Step 4: Simplify right side
   19,863.61x = 295,751,964.02
5. Step 5: Solve for x
   x = 295,751,964.02/19,863.61
6. Step 6: Final answer
   x = 14,889.13