Finding the Fourth Proportional to 31,185.20, 43,035.57 and 17,038.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,185.20 : 43,035.57 = 17,038.05 : x
2. Step 2: Convert to fraction form
   31,185.20/43,035.57 = 17,038.05/x
3. Step 3: Cross multiply
   31,185.20x = 43,035.57 × 17,038.05
4. Step 4: Simplify right side
   31,185.20x = 733,242,032.06
5. Step 5: Solve for x
   x = 733,242,032.06/31,185.20
6. Step 6: Final answer
   x = 23,512.50