Finding the Fourth Proportional to 19,674.21, 27,150.54 and 10,721.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,674.21 : 27,150.54 = 10,721.69 : x
2. Step 2: Convert to fraction form
   19,674.21/27,150.54 = 10,721.69/x
3. Step 3: Cross multiply
   19,674.21x = 27,150.54 × 10,721.69
4. Step 4: Simplify right side
   19,674.21x = 291,099,537.46
5. Step 5: Solve for x
   x = 291,099,537.46/19,674.21
6. Step 6: Final answer
   x = 14,796.00