Finding the Fourth Proportional to 6,146.88, 8,472.78 and 4,156.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,146.88 : 8,472.78 = 4,156.71 : x
2. Step 2: Convert to fraction form
   6,146.88/8,472.78 = 4,156.71/x
3. Step 3: Cross multiply
   6,146.88x = 8,472.78 × 4,156.71
4. Step 4: Simplify right side
   6,146.88x = 35,218,889.35
5. Step 5: Solve for x
   x = 35,218,889.35/6,146.88
6. Step 6: Final answer
   x = 5,729.56