Finding the Fourth Proportional to 12,122.07, 16,722.83 and 7,086.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,122.07 : 16,722.83 = 7,086.51 : x
2. Step 2: Convert to fraction form
   12,122.07/16,722.83 = 7,086.51/x
3. Step 3: Cross multiply
   12,122.07x = 16,722.83 × 7,086.51
4. Step 4: Simplify right side
   12,122.07x = 118,506,466.59
5. Step 5: Solve for x
   x = 118,506,466.59/12,122.07
6. Step 6: Final answer
   x = 9,776.09