Finding the Fourth Proportional to 6,460.79, 8,914.23 and 3,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,460.79 : 8,914.23 = 3,942.72 : x
2. Step 2: Convert to fraction form
   6,460.79/8,914.23 = 3,942.72/x
3. Step 3: Cross multiply
   6,460.79x = 8,914.23 × 3,942.72
4. Step 4: Simplify right side
   6,460.79x = 35,146,312.91
5. Step 5: Solve for x
   x = 35,146,312.91/6,460.79
6. Step 6: Final answer
   x = 5,439.94