Finding the Fourth Proportional to 19,917.82, 27,485.59 and 10,966.10

Step by Step Solution

1. Step 1: Write the proportion equation
   19,917.82 : 27,485.59 = 10,966.10 : x
2. Step 2: Convert to fraction form
   19,917.82/27,485.59 = 10,966.10/x
3. Step 3: Cross multiply
   19,917.82x = 27,485.59 × 10,966.10
4. Step 4: Simplify right side
   19,917.82x = 301,409,728.50
5. Step 5: Solve for x
   x = 301,409,728.50/19,917.82
6. Step 6: Final answer
   x = 15,132.67