Finding the Fourth Proportional to 16,969.76, 25,431.58 and 10,802.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,969.76 : 25,431.58 = 10,802.72 : x
2. Step 2: Convert to fraction form
   16,969.76/25,431.58 = 10,802.72/x
3. Step 3: Cross multiply
   16,969.76x = 25,431.58 × 10,802.72
4. Step 4: Simplify right side
   16,969.76x = 274,730,237.90
5. Step 5: Solve for x
   x = 274,730,237.90/16,969.76
6. Step 6: Final answer
   x = 16,189.40