Finding the Fourth Proportional to 31,568.13, 43,568.82 and 19,635.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,568.13 : 43,568.82 = 19,635.30 : x
2. Step 2: Convert to fraction form
   31,568.13/43,568.82 = 19,635.30/x
3. Step 3: Cross multiply
   31,568.13x = 43,568.82 × 19,635.30
4. Step 4: Simplify right side
   31,568.13x = 855,486,851.35
5. Step 5: Solve for x
   x = 855,486,851.35/31,568.13
6. Step 6: Final answer
   x = 27,099.70