Finding the Fourth Proportional to 21,795.36, 30,078.18 and 12,365.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,795.36 : 30,078.18 = 12,365.34 : x
2. Step 2: Convert to fraction form
   21,795.36/30,078.18 = 12,365.34/x
3. Step 3: Cross multiply
   21,795.36x = 30,078.18 × 12,365.34
4. Step 4: Simplify right side
   21,795.36x = 371,926,922.28
5. Step 5: Solve for x
   x = 371,926,922.28/21,795.36
6. Step 6: Final answer
   x = 17,064.50