Finding the Fourth Proportional to 21,822.95, 30,114.83 and 13,339.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,822.95 : 30,114.83 = 13,339.28 : x
2. Step 2: Convert to fraction form
   21,822.95/30,114.83 = 13,339.28/x
3. Step 3: Cross multiply
   21,822.95x = 30,114.83 × 13,339.28
4. Step 4: Simplify right side
   21,822.95x = 401,710,160.01
5. Step 5: Solve for x
   x = 401,710,160.01/21,822.95
6. Step 6: Final answer
   x = 18,407.69