Finding the Fourth Proportional to 31,590.72, 43,590.96 and 17,979.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,590.72 : 43,590.96 = 17,979.03 : x
2. Step 2: Convert to fraction form
   31,590.72/43,590.96 = 17,979.03/x
3. Step 3: Cross multiply
   31,590.72x = 43,590.96 × 17,979.03
4. Step 4: Simplify right side
   31,590.72x = 783,723,177.57
5. Step 5: Solve for x
   x = 783,723,177.57/31,590.72
6. Step 6: Final answer
   x = 24,808.65