Finding the Fourth Proportional to 12,976.50, 17,907.63 and 7,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.50 : 17,907.63 = 7,387.50 : x
2. Step 2: Convert to fraction form
   12,976.50/17,907.63 = 7,387.50/x
3. Step 3: Cross multiply
   12,976.50x = 17,907.63 × 7,387.50
4. Step 4: Simplify right side
   12,976.50x = 132,292,616.63
5. Step 5: Solve for x
   x = 132,292,616.63/12,976.50
6. Step 6: Final answer
   x = 10,194.78