Finding the Fourth Proportional to 31,590.40, 43,594.72 and 18,164.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,590.40 : 43,594.72 = 18,164.28 : x
2. Step 2: Convert to fraction form
   31,590.40/43,594.72 = 18,164.28/x
3. Step 3: Cross multiply
   31,590.40x = 43,594.72 × 18,164.28
4. Step 4: Simplify right side
   31,590.40x = 791,866,700.60
5. Step 5: Solve for x
   x = 791,866,700.60/31,590.40
6. Step 6: Final answer
   x = 25,066.69