Finding the Fourth Proportional to 31,485.72, 43,450.32 and 17,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,485.72 : 43,450.32 = 17,338.50 : x
2. Step 2: Convert to fraction form
   31,485.72/43,450.32 = 17,338.50/x
3. Step 3: Cross multiply
   31,485.72x = 43,450.32 × 17,338.50
4. Step 4: Simplify right side
   31,485.72x = 753,363,373.32
5. Step 5: Solve for x
   x = 753,363,373.32/31,485.72
6. Step 6: Final answer
   x = 23,927.14