Finding the Fourth Proportional to 12,057.86, 16,640.42 and 7,277.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,057.86 : 16,640.42 = 7,277.71 : x
2. Step 2: Convert to fraction form
   12,057.86/16,640.42 = 7,277.71/x
3. Step 3: Cross multiply
   12,057.86x = 16,640.42 × 7,277.71
4. Step 4: Simplify right side
   12,057.86x = 121,104,100.59
5. Step 5: Solve for x
   x = 121,104,100.59/12,057.86
6. Step 6: Final answer
   x = 10,043.58