Finding the Fourth Proportional to 4,726.70, 7,086.69 and 3,164.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,726.70 : 7,086.69 = 3,164.78 : x
2. Step 2: Convert to fraction form
   4,726.70/7,086.69 = 3,164.78/x
3. Step 3: Cross multiply
   4,726.70x = 7,086.69 × 3,164.78
4. Step 4: Simplify right side
   4,726.70x = 22,427,814.78
5. Step 5: Solve for x
   x = 22,427,814.78/4,726.70
6. Step 6: Final answer
   x = 4,744.92