Finding the Fourth Proportional to 19,680.42, 27,158.16 and 10,727.73

Step by Step Solution

1. Step 1: Write the proportion equation
   19,680.42 : 27,158.16 = 10,727.73 : x
2. Step 2: Convert to fraction form
   19,680.42/27,158.16 = 10,727.73/x
3. Step 3: Cross multiply
   19,680.42x = 27,158.16 × 10,727.73
4. Step 4: Simplify right side
   19,680.42x = 291,345,407.78
5. Step 5: Solve for x
   x = 291,345,407.78/19,680.42
6. Step 6: Final answer
   x = 14,803.82