Finding the Fourth Proportional to 11,842.52, 17,754.90 and 7,161.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,842.52 : 17,754.90 = 7,161.57 : x
2. Step 2: Convert to fraction form
   11,842.52/17,754.90 = 7,161.57/x
3. Step 3: Cross multiply
   11,842.52x = 17,754.90 × 7,161.57
4. Step 4: Simplify right side
   11,842.52x = 127,152,997.38
5. Step 5: Solve for x
   x = 127,152,997.38/11,842.52
6. Step 6: Final answer
   x = 10,736.99