Finding the Fourth Proportional to 19,808.72, 27,336.25 and 10,856.03

Step by Step Solution

1. Step 1: Write the proportion equation
   19,808.72 : 27,336.25 = 10,856.03 : x
2. Step 2: Convert to fraction form
   19,808.72/27,336.25 = 10,856.03/x
3. Step 3: Cross multiply
   19,808.72x = 27,336.25 × 10,856.03
4. Step 4: Simplify right side
   19,808.72x = 296,763,095.81
5. Step 5: Solve for x
   x = 296,763,095.81/19,808.72
6. Step 6: Final answer
   x = 14,981.44