Finding the Fourth Proportional to 35,308.78, 48,735.27 and 21,872.09

Step by Step Solution

1. Step 1: Write the proportion equation
   35,308.78 : 48,735.27 = 21,872.09 : x
2. Step 2: Convert to fraction form
   35,308.78/48,735.27 = 21,872.09/x
3. Step 3: Cross multiply
   35,308.78x = 48,735.27 × 21,872.09
4. Step 4: Simplify right side
   35,308.78x = 1,065,942,333.45
5. Step 5: Solve for x
   x = 1,065,942,333.45/35,308.78
6. Step 6: Final answer
   x = 30,189.16