Finding the Fourth Proportional to 6,889.73, 9,507.25 and 3,905.83

Step by Step Solution

1. Step 1: Write the proportion equation
   6,889.73 : 9,507.25 = 3,905.83 : x
2. Step 2: Convert to fraction form
   6,889.73/9,507.25 = 3,905.83/x
3. Step 3: Cross multiply
   6,889.73x = 9,507.25 × 3,905.83
4. Step 4: Simplify right side
   6,889.73x = 37,133,719.03
5. Step 5: Solve for x
   x = 37,133,719.03/6,889.73
6. Step 6: Final answer
   x = 5,389.72