Finding the Fourth Proportional to 7,456.91, 10,290.12 and 4,099.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,456.91 : 10,290.12 = 4,099.18 : x
2. Step 2: Convert to fraction form
   7,456.91/10,290.12 = 4,099.18/x
3. Step 3: Cross multiply
   7,456.91x = 10,290.12 × 4,099.18
4. Step 4: Simplify right side
   7,456.91x = 42,181,043.75
5. Step 5: Solve for x
   x = 42,181,043.75/7,456.91
6. Step 6: Final answer
   x = 5,656.64