Finding the Fourth Proportional to 21,773.12, 30,049.34 and 12,822.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,773.12 : 30,049.34 = 12,822.84 : x
2. Step 2: Convert to fraction form
   21,773.12/30,049.34 = 12,822.84/x
3. Step 3: Cross multiply
   21,773.12x = 30,049.34 × 12,822.84
4. Step 4: Simplify right side
   21,773.12x = 385,317,878.93
5. Step 5: Solve for x
   x = 385,317,878.93/21,773.12
6. Step 6: Final answer
   x = 17,696.95