Finding the Fourth Proportional to 7,333.78, 10,120.64 and 3,976.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,333.78 : 10,120.64 = 3,976.59 : x
2. Step 2: Convert to fraction form
   7,333.78/10,120.64 = 3,976.59/x
3. Step 3: Cross multiply
   7,333.78x = 10,120.64 × 3,976.59
4. Step 4: Simplify right side
   7,333.78x = 40,245,635.82
5. Step 5: Solve for x
   x = 40,245,635.82/7,333.78
6. Step 6: Final answer
   x = 5,487.71