Finding the Fourth Proportional to 12,111.87, 16,714.68 and 6,807.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.87 : 16,714.68 = 6,807.18 : x
2. Step 2: Convert to fraction form
   12,111.87/16,714.68 = 6,807.18/x
3. Step 3: Cross multiply
   12,111.87x = 16,714.68 × 6,807.18
4. Step 4: Simplify right side
   12,111.87x = 113,779,835.40
5. Step 5: Solve for x
   x = 113,779,835.40/12,111.87
6. Step 6: Final answer
   x = 9,394.08