Finding the Fourth Proportional to 19,826.10, 27,362.18 and 12,662.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,826.10 : 27,362.18 = 12,662.61 : x
2. Step 2: Convert to fraction form
   19,826.10/27,362.18 = 12,662.61/x
3. Step 3: Cross multiply
   19,826.10x = 27,362.18 × 12,662.61
4. Step 4: Simplify right side
   19,826.10x = 346,476,550.78
5. Step 5: Solve for x
   x = 346,476,550.78/19,826.10
6. Step 6: Final answer
   x = 17,475.78