Finding the Fourth Proportional to 4,942.45, 7,405.47 and 3,478.52

Step by Step Solution

1. Step 1: Write the proportion equation
   4,942.45 : 7,405.47 = 3,478.52 : x
2. Step 2: Convert to fraction form
   4,942.45/7,405.47 = 3,478.52/x
3. Step 3: Cross multiply
   4,942.45x = 7,405.47 × 3,478.52
4. Step 4: Simplify right side
   4,942.45x = 25,760,094.86
5. Step 5: Solve for x
   x = 25,760,094.86/4,942.45
6. Step 6: Final answer
   x = 5,212.01