Finding the Fourth Proportional to 4,760.78, 7,100.91 and 4,486.38

Step by Step Solution

1. Step 1: Write the proportion equation
   4,760.78 : 7,100.91 = 4,486.38 : x
2. Step 2: Convert to fraction form
   4,760.78/7,100.91 = 4,486.38/x
3. Step 3: Cross multiply
   4,760.78x = 7,100.91 × 4,486.38
4. Step 4: Simplify right side
   4,760.78x = 31,857,380.61
5. Step 5: Solve for x
   x = 31,857,380.61/4,760.78
6. Step 6: Final answer
   x = 6,691.63