Finding the Fourth Proportional to 6,904.83, 9,528.78 and 3,920.75

Step by Step Solution

1. Step 1: Write the proportion equation
   6,904.83 : 9,528.78 = 3,920.75 : x
2. Step 2: Convert to fraction form
   6,904.83/9,528.78 = 3,920.75/x
3. Step 3: Cross multiply
   6,904.83x = 9,528.78 × 3,920.75
4. Step 4: Simplify right side
   6,904.83x = 37,359,964.19
5. Step 5: Solve for x
   x = 37,359,964.19/6,904.83
6. Step 6: Final answer
   x = 5,410.70