Finding the Fourth Proportional to 31,568.54, 43,580.34 and 19,635.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,568.54 : 43,580.34 = 19,635.72 : x
2. Step 2: Convert to fraction form
   31,568.54/43,580.34 = 19,635.72/x
3. Step 3: Cross multiply
   31,568.54x = 43,580.34 × 19,635.72
4. Step 4: Simplify right side
   31,568.54x = 855,731,353.74
5. Step 5: Solve for x
   x = 855,731,353.74/31,568.54
6. Step 6: Final answer
   x = 27,107.09