Finding the Fourth Proportional to 31,590.72, 43,604.84 and 19,494.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,590.72 : 43,604.84 = 19,494.89 : x
2. Step 2: Convert to fraction form
   31,590.72/43,604.84 = 19,494.89/x
3. Step 3: Cross multiply
   31,590.72x = 43,604.84 × 19,494.89
4. Step 4: Simplify right side
   31,590.72x = 850,071,559.27
5. Step 5: Solve for x
   x = 850,071,559.27/31,590.72
6. Step 6: Final answer
   x = 26,908.90