Finding the Fourth Proportional to 11,945.14, 17,921.31 and 4,825.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.14 : 17,921.31 = 4,825.72 : x
2. Step 2: Convert to fraction form
   11,945.14/17,921.31 = 4,825.72/x
3. Step 3: Cross multiply
   11,945.14x = 17,921.31 × 4,825.72
4. Step 4: Simplify right side
   11,945.14x = 86,483,224.09
5. Step 5: Solve for x
   x = 86,483,224.09/11,945.14
6. Step 6: Final answer
   x = 7,240.03