Finding the Fourth Proportional to 9,991.56, 14,995.98 and 3,839.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,991.56 : 14,995.98 = 3,839.88 : x
2. Step 2: Convert to fraction form
   9,991.56/14,995.98 = 3,839.88/x
3. Step 3: Cross multiply
   9,991.56x = 14,995.98 × 3,839.88
4. Step 4: Simplify right side
   9,991.56x = 57,582,763.68
5. Step 5: Solve for x
   x = 57,582,763.68/9,991.56
6. Step 6: Final answer
   x = 5,763.14