Finding the Fourth Proportional to 21,798.99, 30,083.59 and 12,846.87

Step by Step Solution

1. Step 1: Write the proportion equation
   21,798.99 : 30,083.59 = 12,846.87 : x
2. Step 2: Convert to fraction form
   21,798.99/30,083.59 = 12,846.87/x
3. Step 3: Cross multiply
   21,798.99x = 30,083.59 × 12,846.87
4. Step 4: Simplify right side
   21,798.99x = 386,479,969.86
5. Step 5: Solve for x
   x = 386,479,969.86/21,798.99
6. Step 6: Final answer
   x = 17,729.26