Finding the Fourth Proportional to 21,160.37, 31,754.32 and 9,164.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,160.37 : 31,754.32 = 9,164.24 : x
2. Step 2: Convert to fraction form
   21,160.37/31,754.32 = 9,164.24/x
3. Step 3: Cross multiply
   21,160.37x = 31,754.32 × 9,164.24
4. Step 4: Simplify right side
   21,160.37x = 291,004,146.91
5. Step 5: Solve for x
   x = 291,004,146.91/21,160.37
6. Step 6: Final answer
   x = 13,752.32