Finding the Fourth Proportional to 10,906.61, 16,361.31 and 3,887.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.61 : 16,361.31 = 3,887.33 : x
2. Step 2: Convert to fraction form
   10,906.61/16,361.31 = 3,887.33/x
3. Step 3: Cross multiply
   10,906.61x = 16,361.31 × 3,887.33
4. Step 4: Simplify right side
   10,906.61x = 63,601,852.11
5. Step 5: Solve for x
   x = 63,601,852.11/10,906.61
6. Step 6: Final answer
   x = 5,831.49