Finding the Fourth Proportional to 11,923.98, 17,889.75 and 9,300.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,923.98 : 17,889.75 = 9,300.47 : x
2. Step 2: Convert to fraction form
   11,923.98/17,889.75 = 9,300.47/x
3. Step 3: Cross multiply
   11,923.98x = 17,889.75 × 9,300.47
4. Step 4: Simplify right side
   11,923.98x = 166,383,108.46
5. Step 5: Solve for x
   x = 166,383,108.46/11,923.98
6. Step 6: Final answer
   x = 13,953.66