Finding the Fourth Proportional to 3,885.30, 5,622.75 and 3,885.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.30 : 5,622.75 = 3,885.30 : x
2. Step 2: Convert to fraction form
   3,885.30/5,622.75 = 3,885.30/x
3. Step 3: Cross multiply
   3,885.30x = 5,622.75 × 3,885.30
4. Step 4: Simplify right side
   3,885.30x = 21,846,070.58
5. Step 5: Solve for x
   x = 21,846,070.58/3,885.30
6. Step 6: Final answer
   x = 5,622.75