Finding the Fourth Proportional to 12,757.64, 17,593.76 and 7,976.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.64 : 17,593.76 = 7,976.06 : x
2. Step 2: Convert to fraction form
   12,757.64/17,593.76 = 7,976.06/x
3. Step 3: Cross multiply
   12,757.64x = 17,593.76 × 7,976.06
4. Step 4: Simplify right side
   12,757.64x = 140,328,757.54
5. Step 5: Solve for x
   x = 140,328,757.54/12,757.64
6. Step 6: Final answer
   x = 10,999.59