Finding the Fourth Proportional to 5,918.30, 8,166.72 and 3,401.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,918.30 : 8,166.72 = 3,401.42 : x
2. Step 2: Convert to fraction form
   5,918.30/8,166.72 = 3,401.42/x
3. Step 3: Cross multiply
   5,918.30x = 8,166.72 × 3,401.42
4. Step 4: Simplify right side
   5,918.30x = 27,778,444.74
5. Step 5: Solve for x
   x = 27,778,444.74/5,918.30
6. Step 6: Final answer
   x = 4,693.65