Finding the Fourth Proportional to 10,225.89, 15,336.55 and 3,986.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,225.89 : 15,336.55 = 3,986.07 : x
2. Step 2: Convert to fraction form
   10,225.89/15,336.55 = 3,986.07/x
3. Step 3: Cross multiply
   10,225.89x = 15,336.55 × 3,986.07
4. Step 4: Simplify right side
   10,225.89x = 61,132,465.25
5. Step 5: Solve for x
   x = 61,132,465.25/10,225.89
6. Step 6: Final answer
   x = 5,978.21