Finding the Fourth Proportional to 19,581, 27,021.83 and 10,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,581 : 27,021.83 = 10,628.50 : x
2. Step 2: Convert to fraction form
   19,581/27,021.83 = 10,628.50/x
3. Step 3: Cross multiply
   19,581x = 27,021.83 × 10,628.50
4. Step 4: Simplify right side
   19,581x = 287,201,520.16
5. Step 5: Solve for x
   x = 287,201,520.16/19,581
6. Step 6: Final answer
   x = 14,667.36