Finding the Fourth Proportional to 31,816.69, 43,929.00 and 19,885.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,816.69 : 43,929.00 = 19,885.39 : x
2. Step 2: Convert to fraction form
   31,816.69/43,929.00 = 19,885.39/x
3. Step 3: Cross multiply
   31,816.69x = 43,929.00 × 19,885.39
4. Step 4: Simplify right side
   31,816.69x = 873,544,978.24
5. Step 5: Solve for x
   x = 873,544,978.24/31,816.69
6. Step 6: Final answer
   x = 27,455.56