Finding the Fourth Proportional to 31,472.72, 43,432.56 and 17,325.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,472.72 : 43,432.56 = 17,325.20 : x
2. Step 2: Convert to fraction form
   31,472.72/43,432.56 = 17,325.20/x
3. Step 3: Cross multiply
   31,472.72x = 43,432.56 × 17,325.20
4. Step 4: Simplify right side
   31,472.72x = 752,477,788.51
5. Step 5: Solve for x
   x = 752,477,788.51/31,472.72
6. Step 6: Final answer
   x = 23,908.89