Finding the Fourth Proportional to 6,889.10, 9,507.05 and 3,904.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,889.10 : 9,507.05 = 3,904.86 : x
2. Step 2: Convert to fraction form
   6,889.10/9,507.05 = 3,904.86/x
3. Step 3: Cross multiply
   6,889.10x = 9,507.05 × 3,904.86
4. Step 4: Simplify right side
   6,889.10x = 37,123,709.03
5. Step 5: Solve for x
   x = 37,123,709.03/6,889.10
6. Step 6: Final answer
   x = 5,388.76