Finding the Fourth Proportional to 10,567.82, 15,842.00 and 3,989.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,567.82 : 15,842.00 = 3,989.00 : x
2. Step 2: Convert to fraction form
   10,567.82/15,842.00 = 3,989.00/x
3. Step 3: Cross multiply
   10,567.82x = 15,842.00 × 3,989.00
4. Step 4: Simplify right side
   10,567.82x = 63,193,638.85
5. Step 5: Solve for x
   x = 63,193,638.85/10,567.82
6. Step 6: Final answer
   x = 5,979.82