Finding the Fourth Proportional to 13,013.94, 17,959.12 and 7,711.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.94 : 17,959.12 = 7,711.27 : x
2. Step 2: Convert to fraction form
   13,013.94/17,959.12 = 7,711.27/x
3. Step 3: Cross multiply
   13,013.94x = 17,959.12 × 7,711.27
4. Step 4: Simplify right side
   13,013.94x = 138,487,623.28
5. Step 5: Solve for x
   x = 138,487,623.28/13,013.94
6. Step 6: Final answer
   x = 10,641.48