Finding the Fourth Proportional to 7,828.56, 10,806.86 and 5,479.92

Step by Step Solution

1. Step 1: Write the proportion equation
   7,828.56 : 10,806.86 = 5,479.92 : x
2. Step 2: Convert to fraction form
   7,828.56/10,806.86 = 5,479.92/x
3. Step 3: Cross multiply
   7,828.56x = 10,806.86 × 5,479.92
4. Step 4: Simplify right side
   7,828.56x = 59,220,728.25
5. Step 5: Solve for x
   x = 59,220,728.25/7,828.56
6. Step 6: Final answer
   x = 7,564.70