Finding the Fourth Proportional to 10,904.12, 16,354.56 and 3,977

Step by Step Solution

1. Step 1: Write the proportion equation
   10,904.12 : 16,354.56 = 3,977 : x
2. Step 2: Convert to fraction form
   10,904.12/16,354.56 = 3,977/x
3. Step 3: Cross multiply
   10,904.12x = 16,354.56 × 3,977
4. Step 4: Simplify right side
   10,904.12x = 65,042,085.12
5. Step 5: Solve for x
   x = 65,042,085.12/10,904.12
6. Step 6: Final answer
   x = 5,964.91