Finding the Fourth Proportional to 30,369.25, 41,852.82 and 21,856.60

Step by Step Solution

1. Step 1: Write the proportion equation
   30,369.25 : 41,852.82 = 21,856.60 : x
2. Step 2: Convert to fraction form
   30,369.25/41,852.82 = 21,856.60/x
3. Step 3: Cross multiply
   30,369.25x = 41,852.82 × 21,856.60
4. Step 4: Simplify right side
   30,369.25x = 914,760,027.06
5. Step 5: Solve for x
   x = 914,760,027.06/30,369.25
6. Step 6: Final answer
   x = 30,121.26