Finding the Fourth Proportional to 12,100.66, 16,698.86 and 7,065.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.66 : 16,698.86 = 7,065.09 : x
2. Step 2: Convert to fraction form
   12,100.66/16,698.86 = 7,065.09/x
3. Step 3: Cross multiply
   12,100.66x = 16,698.86 × 7,065.09
4. Step 4: Simplify right side
   12,100.66x = 117,978,939.97
5. Step 5: Solve for x
   x = 117,978,939.97/12,100.66
6. Step 6: Final answer
   x = 9,749.80