Finding the Fourth Proportional to 11,712.45, 16,168.76 and 7,238.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,712.45 : 16,168.76 = 7,238.82 : x
2. Step 2: Convert to fraction form
   11,712.45/16,168.76 = 7,238.82/x
3. Step 3: Cross multiply
   11,712.45x = 16,168.76 × 7,238.82
4. Step 4: Simplify right side
   11,712.45x = 117,042,707.07
5. Step 5: Solve for x
   x = 117,042,707.07/11,712.45
6. Step 6: Final answer
   x = 9,993.02