Finding the Fourth Proportional to 6,642.10, 9,958.54 and 2,942.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,642.10 : 9,958.54 = 2,942.31 : x
2. Step 2: Convert to fraction form
   6,642.10/9,958.54 = 2,942.31/x
3. Step 3: Cross multiply
   6,642.10x = 9,958.54 × 2,942.31
4. Step 4: Simplify right side
   6,642.10x = 29,301,111.83
5. Step 5: Solve for x
   x = 29,301,111.83/6,642.10
6. Step 6: Final answer
   x = 4,411.42