Finding the Fourth Proportional to 28,839.31, 39,796.72 and 16,263.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,839.31 : 39,796.72 = 16,263.25 : x
2. Step 2: Convert to fraction form
   28,839.31/39,796.72 = 16,263.25/x
3. Step 3: Cross multiply
   28,839.31x = 39,796.72 × 16,263.25
4. Step 4: Simplify right side
   28,839.31x = 647,224,006.54
5. Step 5: Solve for x
   x = 647,224,006.54/28,839.31
6. Step 6: Final answer
   x = 22,442.42