Finding the Fourth Proportional to 12,111.20, 16,714.06 and 6,807.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.20 : 16,714.06 = 6,807.68 : x
2. Step 2: Convert to fraction form
   12,111.20/16,714.06 = 6,807.68/x
3. Step 3: Cross multiply
   12,111.20x = 16,714.06 × 6,807.68
4. Step 4: Simplify right side
   12,111.20x = 113,783,971.98
5. Step 5: Solve for x
   x = 113,783,971.98/12,111.20
6. Step 6: Final answer
   x = 9,394.94