Finding the Fourth Proportional to 19,667.96, 27,140.84 and 10,715.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,667.96 : 27,140.84 = 10,715.42 : x
2. Step 2: Convert to fraction form
   19,667.96/27,140.84 = 10,715.42/x
3. Step 3: Cross multiply
   19,667.96x = 27,140.84 × 10,715.42
4. Step 4: Simplify right side
   19,667.96x = 290,825,499.75
5. Step 5: Solve for x
   x = 290,825,499.75/19,667.96
6. Step 6: Final answer
   x = 14,786.76