Finding the Fourth Proportional to 19,667.12, 27,140.94 and 10,715.00

Step by Step Solution

1. Step 1: Write the proportion equation
   19,667.12 : 27,140.94 = 10,715.00 : x
2. Step 2: Convert to fraction form
   19,667.12/27,140.94 = 10,715.00/x
3. Step 3: Cross multiply
   19,667.12x = 27,140.94 × 10,715.00
4. Step 4: Simplify right side
   19,667.12x = 290,815,036.40
5. Step 5: Solve for x
   x = 290,815,036.40/19,667.12
6. Step 6: Final answer
   x = 14,786.87