Finding the Fourth Proportional to 12,942.86, 17,860.73 and 7,277.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.86 : 17,860.73 = 7,277.45 : x
2. Step 2: Convert to fraction form
   12,942.86/17,860.73 = 7,277.45/x
3. Step 3: Cross multiply
   12,942.86x = 17,860.73 × 7,277.45
4. Step 4: Simplify right side
   12,942.86x = 129,980,443.85
5. Step 5: Solve for x
   x = 129,980,443.85/12,942.86
6. Step 6: Final answer
   x = 10,042.64