Finding the Fourth Proportional to 22,427.31, 30,949.95 and 12,355.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,427.31 : 30,949.95 = 12,355.53 : x
2. Step 2: Convert to fraction form
   22,427.31/30,949.95 = 12,355.53/x
3. Step 3: Cross multiply
   22,427.31x = 30,949.95 × 12,355.53
4. Step 4: Simplify right side
   22,427.31x = 382,403,035.72
5. Step 5: Solve for x
   x = 382,403,035.72/22,427.31
6. Step 6: Final answer
   x = 17,050.78