Finding the Fourth Proportional to 4,923.18, 7,392.06 and 4,685.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,923.18 : 7,392.06 = 4,685.31 : x
2. Step 2: Convert to fraction form
   4,923.18/7,392.06 = 4,685.31/x
3. Step 3: Cross multiply
   4,923.18x = 7,392.06 × 4,685.31
4. Step 4: Simplify right side
   4,923.18x = 34,634,092.64
5. Step 5: Solve for x
   x = 34,634,092.64/4,923.18
6. Step 6: Final answer
   x = 7,034.90