Finding the Fourth Proportional to 9,906.37, 14,851.37 and 4,638.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,906.37 : 14,851.37 = 4,638.78 : x
2. Step 2: Convert to fraction form
   9,906.37/14,851.37 = 4,638.78/x
3. Step 3: Cross multiply
   9,906.37x = 14,851.37 × 4,638.78
4. Step 4: Simplify right side
   9,906.37x = 68,892,249.73
5. Step 5: Solve for x
   x = 68,892,249.73/9,906.37
6. Step 6: Final answer
   x = 6,954.34