Finding the Fourth Proportional to 7,456.76, 10,290.32 and 4,099.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,456.76 : 10,290.32 = 4,099.79 : x
2. Step 2: Convert to fraction form
   7,456.76/10,290.32 = 4,099.79/x
3. Step 3: Cross multiply
   7,456.76x = 10,290.32 × 4,099.79
4. Step 4: Simplify right side
   7,456.76x = 42,188,079.08
5. Step 5: Solve for x
   x = 42,188,079.08/7,456.76
6. Step 6: Final answer
   x = 5,657.70