Finding the Fourth Proportional to 12,940.94, 17,858.40 and 7,351.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940.94 : 17,858.40 = 7,351.94 : x
2. Step 2: Convert to fraction form
   12,940.94/17,858.40 = 7,351.94/x
3. Step 3: Cross multiply
   12,940.94x = 17,858.40 × 7,351.94
4. Step 4: Simplify right side
   12,940.94x = 131,293,885.30
5. Step 5: Solve for x
   x = 131,293,885.30/12,940.94
6. Step 6: Final answer
   x = 10,145.62