Finding the Fourth Proportional to 11,872.37, 17,801.98 and 4,857.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,872.37 : 17,801.98 = 4,857.31 : x
2. Step 2: Convert to fraction form
   11,872.37/17,801.98 = 4,857.31/x
3. Step 3: Cross multiply
   11,872.37x = 17,801.98 × 4,857.31
4. Step 4: Simplify right side
   11,872.37x = 86,469,754.69
5. Step 5: Solve for x
   x = 86,469,754.69/11,872.37
6. Step 6: Final answer
   x = 7,283.27