Finding the Fourth Proportional to 11,633.47, 17,443.58 and 7,940.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,633.47 : 17,443.58 = 7,940.17 : x
2. Step 2: Convert to fraction form
   11,633.47/17,443.58 = 7,940.17/x
3. Step 3: Cross multiply
   11,633.47x = 17,443.58 × 7,940.17
4. Step 4: Simplify right side
   11,633.47x = 138,505,072.41
5. Step 5: Solve for x
   x = 138,505,072.41/11,633.47
6. Step 6: Final answer
   x = 11,905.74