Finding the Fourth Proportional to 3,887.94, 5,823.78 and 3,777.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887.94 : 5,823.78 = 3,777.18 : x
2. Step 2: Convert to fraction form
   3,887.94/5,823.78 = 3,777.18/x
3. Step 3: Cross multiply
   3,887.94x = 5,823.78 × 3,777.18
4. Step 4: Simplify right side
   3,887.94x = 21,997,465.34
5. Step 5: Solve for x
   x = 21,997,465.34/3,887.94
6. Step 6: Final answer
   x = 5,657.87