Finding the Fourth Proportional to 7,412.78, 10,229.91 and 4,055.39

Step by Step Solution

1. Step 1: Write the proportion equation
   7,412.78 : 10,229.91 = 4,055.39 : x
2. Step 2: Convert to fraction form
   7,412.78/10,229.91 = 4,055.39/x
3. Step 3: Cross multiply
   7,412.78x = 10,229.91 × 4,055.39
4. Step 4: Simplify right side
   7,412.78x = 41,486,274.71
5. Step 5: Solve for x
   x = 41,486,274.71/7,412.78
6. Step 6: Final answer
   x = 5,596.59