Finding the Fourth Proportional to 12,976.50, 17,907.57 and 7,388.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.50 : 17,907.57 = 7,388.58 : x
2. Step 2: Convert to fraction form
   12,976.50/17,907.57 = 7,388.58/x
3. Step 3: Cross multiply
   12,976.50x = 17,907.57 × 7,388.58
4. Step 4: Simplify right side
   12,976.50x = 132,311,513.55
5. Step 5: Solve for x
   x = 132,311,513.55/12,976.50
6. Step 6: Final answer
   x = 10,196.24