Finding the Fourth Proportional to 3,890.34, 5,827.95 and 3,454.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.34 : 5,827.95 = 3,454.02 : x
2. Step 2: Convert to fraction form
   3,890.34/5,827.95 = 3,454.02/x
3. Step 3: Cross multiply
   3,890.34x = 5,827.95 × 3,454.02
4. Step 4: Simplify right side
   3,890.34x = 20,129,855.86
5. Step 5: Solve for x
   x = 20,129,855.86/3,890.34
6. Step 6: Final answer
   x = 5,174.32