Finding the Fourth Proportional to 12,078.64, 16,667.52 and 6,772.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.64 : 16,667.52 = 6,772.72 : x
2. Step 2: Convert to fraction form
   12,078.64/16,667.52 = 6,772.72/x
3. Step 3: Cross multiply
   12,078.64x = 16,667.52 × 6,772.72
4. Step 4: Simplify right side
   12,078.64x = 112,884,446.05
5. Step 5: Solve for x
   x = 112,884,446.05/12,078.64
6. Step 6: Final answer
   x = 9,345.79