Finding the Fourth Proportional to 31,617.21, 43,629.89 and 17,274.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,617.21 : 43,629.89 = 17,274.20 : x
2. Step 2: Convert to fraction form
   31,617.21/43,629.89 = 17,274.20/x
3. Step 3: Cross multiply
   31,617.21x = 43,629.89 × 17,274.20
4. Step 4: Simplify right side
   31,617.21x = 753,671,141.32
5. Step 5: Solve for x
   x = 753,671,141.32/31,617.21
6. Step 6: Final answer
   x = 23,837.37