Finding the Fourth Proportional to 12,678.39, 17,495.46 and 7,012.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,678.39 : 17,495.46 = 7,012.94 : x
2. Step 2: Convert to fraction form
   12,678.39/17,495.46 = 7,012.94/x
3. Step 3: Cross multiply
   12,678.39x = 17,495.46 × 7,012.94
4. Step 4: Simplify right side
   12,678.39x = 122,694,523.78
5. Step 5: Solve for x
   x = 122,694,523.78/12,678.39
6. Step 6: Final answer
   x = 9,677.45