Finding the Fourth Proportional to 16,918.56, 25,367.88 and 7,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,918.56 : 25,367.88 = 7,902.72 : x
2. Step 2: Convert to fraction form
   16,918.56/25,367.88 = 7,902.72/x
3. Step 3: Cross multiply
   16,918.56x = 25,367.88 × 7,902.72
4. Step 4: Simplify right side
   16,918.56x = 200,475,252.63
5. Step 5: Solve for x
   x = 200,475,252.63/16,918.56
6. Step 6: Final answer
   x = 11,849.43