Finding the Fourth Proportional to 9,620.78, 14,418.55 and 4,936.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,620.78 : 14,418.55 = 4,936.82 : x
2. Step 2: Convert to fraction form
   9,620.78/14,418.55 = 4,936.82/x
3. Step 3: Cross multiply
   9,620.78x = 14,418.55 × 4,936.82
4. Step 4: Simplify right side
   9,620.78x = 71,181,786.01
5. Step 5: Solve for x
   x = 71,181,786.01/9,620.78
6. Step 6: Final answer
   x = 7,398.75