Finding the Fourth Proportional to 11,635.40, 17,446.46 and 7,942.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,635.40 : 17,446.46 = 7,942.10 : x
2. Step 2: Convert to fraction form
   11,635.40/17,446.46 = 7,942.10/x
3. Step 3: Cross multiply
   11,635.40x = 17,446.46 × 7,942.10
4. Step 4: Simplify right side
   11,635.40x = 138,561,462.59
5. Step 5: Solve for x
   x = 138,561,462.59/11,635.40
6. Step 6: Final answer
   x = 11,908.62