Finding the Fourth Proportional to 31,585.55, 43,587.72 and 17,438.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,585.55 : 43,587.72 = 17,438.09 : x
2. Step 2: Convert to fraction form
   31,585.55/43,587.72 = 17,438.09/x
3. Step 3: Cross multiply
   31,585.55x = 43,587.72 × 17,438.09
4. Step 4: Simplify right side
   31,585.55x = 760,086,366.32
5. Step 5: Solve for x
   x = 760,086,366.32/31,585.55
6. Step 6: Final answer
   x = 24,064.37