Finding the Fourth Proportional to 31,584.90, 43,585.41 and 19,647.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,584.90 : 43,585.41 = 19,647.86 : x
2. Step 2: Convert to fraction form
   31,584.90/43,585.41 = 19,647.86/x
3. Step 3: Cross multiply
   31,584.90x = 43,585.41 × 19,647.86
4. Step 4: Simplify right side
   31,584.90x = 856,360,033.72
5. Step 5: Solve for x
   x = 856,360,033.72/31,584.90
6. Step 6: Final answer
   x = 27,112.96