Finding the Fourth Proportional to 14,128.92, 19,498.56 and 7,841.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,128.92 : 19,498.56 = 7,841.28 : x
2. Step 2: Convert to fraction form
   14,128.92/19,498.56 = 7,841.28/x
3. Step 3: Cross multiply
   14,128.92x = 19,498.56 × 7,841.28
4. Step 4: Simplify right side
   14,128.92x = 152,893,668.56
5. Step 5: Solve for x
   x = 152,893,668.56/14,128.92
6. Step 6: Final answer
   x = 10,821.33