Finding the Fourth Proportional to 3,876.90, 5,817.42 and 3,667.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,876.90 : 5,817.42 = 3,667.83 : x
2. Step 2: Convert to fraction form
   3,876.90/5,817.42 = 3,667.83/x
3. Step 3: Cross multiply
   3,876.90x = 5,817.42 × 3,667.83
4. Step 4: Simplify right side
   3,876.90x = 21,337,307.60
5. Step 5: Solve for x
   x = 21,337,307.60/3,876.90
6. Step 6: Final answer
   x = 5,503.70