Finding the Fourth Proportional to 31,864.77, 43,978.82 and 18,444.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,864.77 : 43,978.82 = 18,444.20 : x
2. Step 2: Convert to fraction form
   31,864.77/43,978.82 = 18,444.20/x
3. Step 3: Cross multiply
   31,864.77x = 43,978.82 × 18,444.20
4. Step 4: Simplify right side
   31,864.77x = 811,153,839.73
5. Step 5: Solve for x
   x = 811,153,839.73/31,864.77
6. Step 6: Final answer
   x = 25,456.13