Finding the Fourth Proportional to 21,804.94, 30,090.48 and 12,852.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,804.94 : 30,090.48 = 12,852.82 : x
2. Step 2: Convert to fraction form
   21,804.94/30,090.48 = 12,852.82/x
3. Step 3: Cross multiply
   21,804.94x = 30,090.48 × 12,852.82
4. Step 4: Simplify right side
   21,804.94x = 386,747,523.15
5. Step 5: Solve for x
   x = 386,747,523.15/21,804.94
6. Step 6: Final answer
   x = 17,736.69