Finding the Fourth Proportional to 3,898.86, 5,840.54 and 3,579.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898.86 : 5,840.54 = 3,579.92 : x
2. Step 2: Convert to fraction form
   3,898.86/5,840.54 = 3,579.92/x
3. Step 3: Cross multiply
   3,898.86x = 5,840.54 × 3,579.92
4. Step 4: Simplify right side
   3,898.86x = 20,908,640.76
5. Step 5: Solve for x
   x = 20,908,640.76/3,898.86
6. Step 6: Final answer
   x = 5,362.76