Finding the Fourth Proportional to 12,940.37, 17,858.93 and 7,276.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940.37 : 17,858.93 = 7,276.53 : x
2. Step 2: Convert to fraction form
   12,940.37/17,858.93 = 7,276.53/x
3. Step 3: Cross multiply
   12,940.37x = 17,858.93 × 7,276.53
4. Step 4: Simplify right side
   12,940.37x = 129,951,003.53
5. Step 5: Solve for x
   x = 129,951,003.53/12,940.37
6. Step 6: Final answer
   x = 10,042.30