Finding the Fourth Proportional to 12,111.39, 16,713.54 and 6,806.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.39 : 16,713.54 = 6,806.70 : x
2. Step 2: Convert to fraction form
   12,111.39/16,713.54 = 6,806.70/x
3. Step 3: Cross multiply
   12,111.39x = 16,713.54 × 6,806.70
4. Step 4: Simplify right side
   12,111.39x = 113,764,052.72
5. Step 5: Solve for x
   x = 113,764,052.72/12,111.39
6. Step 6: Final answer
   x = 9,393.15