Finding the Fourth Proportional to 9,862.85, 13,611.03 and 5,386.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,862.85 : 13,611.03 = 5,386.83 : x
2. Step 2: Convert to fraction form
   9,862.85/13,611.03 = 5,386.83/x
3. Step 3: Cross multiply
   9,862.85x = 13,611.03 × 5,386.83
4. Step 4: Simplify right side
   9,862.85x = 73,320,304.73
5. Step 5: Solve for x
   x = 73,320,304.73/9,862.85
6. Step 6: Final answer
   x = 7,433.99