Finding the Fourth Proportional to 6,664.67, 9,989.06 and 3,102.00

Step by Step Solution

1. Step 1: Write the proportion equation
   6,664.67 : 9,989.06 = 3,102.00 : x
2. Step 2: Convert to fraction form
   6,664.67/9,989.06 = 3,102.00/x
3. Step 3: Cross multiply
   6,664.67x = 9,989.06 × 3,102.00
4. Step 4: Simplify right side
   6,664.67x = 30,986,011.15
5. Step 5: Solve for x
   x = 30,986,011.15/6,664.67
6. Step 6: Final answer
   x = 4,649.29