Finding the Fourth Proportional to 11,981.56, 17,975.82 and 4,960.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,981.56 : 17,975.82 = 4,960.28 : x
2. Step 2: Convert to fraction form
   11,981.56/17,975.82 = 4,960.28/x
3. Step 3: Cross multiply
   11,981.56x = 17,975.82 × 4,960.28
4. Step 4: Simplify right side
   11,981.56x = 89,165,100.43
5. Step 5: Solve for x
   x = 89,165,100.43/11,981.56
6. Step 6: Final answer
   x = 7,441.86