Finding the Fourth Proportional to 28,805.46, 39,756.69 and 16,868.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,805.46 : 39,756.69 = 16,868.10 : x
2. Step 2: Convert to fraction form
   28,805.46/39,756.69 = 16,868.10/x
3. Step 3: Cross multiply
   28,805.46x = 39,756.69 × 16,868.10
4. Step 4: Simplify right side
   28,805.46x = 670,619,822.59
5. Step 5: Solve for x
   x = 670,619,822.59/28,805.46
6. Step 6: Final answer
   x = 23,281.00