Finding the Fourth Proportional to 21,822.06, 30,114.16 and 12,390.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,822.06 : 30,114.16 = 12,390.01 : x
2. Step 2: Convert to fraction form
   21,822.06/30,114.16 = 12,390.01/x
3. Step 3: Cross multiply
   21,822.06x = 30,114.16 × 12,390.01
4. Step 4: Simplify right side
   21,822.06x = 373,114,743.54
5. Step 5: Solve for x
   x = 373,114,743.54/21,822.06
6. Step 6: Final answer
   x = 17,098.05