Finding the Fourth Proportional to 10,558.18, 15,841.50 and 3,986.23

Step by Step Solution

1. Step 1: Write the proportion equation
   10,558.18 : 15,841.50 = 3,986.23 : x
2. Step 2: Convert to fraction form
   10,558.18/15,841.50 = 3,986.23/x
3. Step 3: Cross multiply
   10,558.18x = 15,841.50 × 3,986.23
4. Step 4: Simplify right side
   10,558.18x = 63,147,862.55
5. Step 5: Solve for x
   x = 63,147,862.55/10,558.18
6. Step 6: Final answer
   x = 5,980.94