Finding the Fourth Proportional to 3,945.58, 5,906.04 and 2,906.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.58 : 5,906.04 = 2,906.76 : x
2. Step 2: Convert to fraction form
   3,945.58/5,906.04 = 2,906.76/x
3. Step 3: Cross multiply
   3,945.58x = 5,906.04 × 2,906.76
4. Step 4: Simplify right side
   3,945.58x = 17,167,440.83
5. Step 5: Solve for x
   x = 17,167,440.83/3,945.58
6. Step 6: Final answer
   x = 4,351.06