Finding the Fourth Proportional to 31,499.72, 43,469.61 and 17,353.47

Step by Step Solution

1. Step 1: Write the proportion equation
   31,499.72 : 43,469.61 = 17,353.47 : x
2. Step 2: Convert to fraction form
   31,499.72/43,469.61 = 17,353.47/x
3. Step 3: Cross multiply
   31,499.72x = 43,469.61 × 17,353.47
4. Step 4: Simplify right side
   31,499.72x = 754,348,768.60
5. Step 5: Solve for x
   x = 754,348,768.60/31,499.72
6. Step 6: Final answer
   x = 23,947.79