Finding the Fourth Proportional to 11,128.68, 15,275.72 and 9,841.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,128.68 : 15,275.72 = 9,841.52 : x
2. Step 2: Convert to fraction form
   11,128.68/15,275.72 = 9,841.52/x
3. Step 3: Cross multiply
   11,128.68x = 15,275.72 × 9,841.52
4. Step 4: Simplify right side
   11,128.68x = 150,336,303.89
5. Step 5: Solve for x
   x = 150,336,303.89/11,128.68
6. Step 6: Final answer
   x = 13,508.91