Finding the Fourth Proportional to 10,647.75, 15,978.96 and 3,722.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,647.75 : 15,978.96 = 3,722.25 : x
2. Step 2: Convert to fraction form
   10,647.75/15,978.96 = 3,722.25/x
3. Step 3: Cross multiply
   10,647.75x = 15,978.96 × 3,722.25
4. Step 4: Simplify right side
   10,647.75x = 59,477,683.86
5. Step 5: Solve for x
   x = 59,477,683.86/10,647.75
6. Step 6: Final answer
   x = 5,585.94