Finding the Fourth Proportional to 19,809.06, 27,336.59 and 10,856.53

Step by Step Solution

1. Step 1: Write the proportion equation
   19,809.06 : 27,336.59 = 10,856.53 : x
2. Step 2: Convert to fraction form
   19,809.06/27,336.59 = 10,856.53/x
3. Step 3: Cross multiply
   19,809.06x = 27,336.59 × 10,856.53
4. Step 4: Simplify right side
   19,809.06x = 296,780,530.03
5. Step 5: Solve for x
   x = 296,780,530.03/19,809.06
6. Step 6: Final answer
   x = 14,982.06