Finding the Fourth Proportional to 9,838.56, 14,744.87 and 3,991.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,838.56 : 14,744.87 = 3,991.98 : x
2. Step 2: Convert to fraction form
   9,838.56/14,744.87 = 3,991.98/x
3. Step 3: Cross multiply
   9,838.56x = 14,744.87 × 3,991.98
4. Step 4: Simplify right side
   9,838.56x = 58,861,276.45
5. Step 5: Solve for x
   x = 58,861,276.45/9,838.56
6. Step 6: Final answer
   x = 5,982.71