Finding the Fourth Proportional to 31,877.67, 43,990.56 and 17,730.21

Step by Step Solution

1. Step 1: Write the proportion equation
   31,877.67 : 43,990.56 = 17,730.21 : x
2. Step 2: Convert to fraction form
   31,877.67/43,990.56 = 17,730.21/x
3. Step 3: Cross multiply
   31,877.67x = 43,990.56 × 17,730.21
4. Step 4: Simplify right side
   31,877.67x = 779,961,866.82
5. Step 5: Solve for x
   x = 779,961,866.82/31,877.67
6. Step 6: Final answer
   x = 24,467.34