Finding the Fourth Proportional to 21,803.94, 30,089.10 and 12,851.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,803.94 : 30,089.10 = 12,851.82 : x
2. Step 2: Convert to fraction form
   21,803.94/30,089.10 = 12,851.82/x
3. Step 3: Cross multiply
   21,803.94x = 30,089.10 × 12,851.82
4. Step 4: Simplify right side
   21,803.94x = 386,699,697.16
5. Step 5: Solve for x
   x = 386,699,697.16/21,803.94
6. Step 6: Final answer
   x = 17,735.31