Finding the Fourth Proportional to 31,585.50, 43,588.04 and 17,438.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,585.50 : 43,588.04 = 17,438.31 : x
2. Step 2: Convert to fraction form
   31,585.50/43,588.04 = 17,438.31/x
3. Step 3: Cross multiply
   31,585.50x = 43,588.04 × 17,438.31
4. Step 4: Simplify right side
   31,585.50x = 760,101,666.62
5. Step 5: Solve for x
   x = 760,101,666.62/31,585.50
6. Step 6: Final answer
   x = 24,064.89