Finding the Fourth Proportional to 21,796.70, 30,081.48 and 12,846.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,796.70 : 30,081.48 = 12,846.98 : x
2. Step 2: Convert to fraction form
   21,796.70/30,081.48 = 12,846.98/x
3. Step 3: Cross multiply
   21,796.70x = 30,081.48 × 12,846.98
4. Step 4: Simplify right side
   21,796.70x = 386,456,171.93
5. Step 5: Solve for x
   x = 386,456,171.93/21,796.70
6. Step 6: Final answer
   x = 17,730.03