Finding the Fourth Proportional to 6,990.56, 9,647.28 and 3,846.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,990.56 : 9,647.28 = 3,846.88 : x
2. Step 2: Convert to fraction form
   6,990.56/9,647.28 = 3,846.88/x
3. Step 3: Cross multiply
   6,990.56x = 9,647.28 × 3,846.88
4. Step 4: Simplify right side
   6,990.56x = 37,111,928.49
5. Step 5: Solve for x
   x = 37,111,928.49/6,990.56
6. Step 6: Final answer
   x = 5,308.86