Finding the Fourth Proportional to 3,887.48, 5,361.43 and 3,284.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887.48 : 5,361.43 = 3,284.78 : x
2. Step 2: Convert to fraction form
   3,887.48/5,361.43 = 3,284.78/x
3. Step 3: Cross multiply
   3,887.48x = 5,361.43 × 3,284.78
4. Step 4: Simplify right side
   3,887.48x = 17,611,095.02
5. Step 5: Solve for x
   x = 17,611,095.02/3,887.48
6. Step 6: Final answer
   x = 4,530.20