Finding the Fourth Proportional to 10,915, 15,062.72 and 5,947

Step by Step Solution

1. Step 1: Write the proportion equation
   10,915 : 15,062.72 = 5,947 : x
2. Step 2: Convert to fraction form
   10,915/15,062.72 = 5,947/x
3. Step 3: Cross multiply
   10,915x = 15,062.72 × 5,947
4. Step 4: Simplify right side
   10,915x = 89,577,995.84
5. Step 5: Solve for x
   x = 89,577,995.84/10,915
6. Step 6: Final answer
   x = 8,206.87