Finding the Fourth Proportional to 11,078.10, 15,279.14 and 7,099.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,078.10 : 15,279.14 = 7,099.59 : x
2. Step 2: Convert to fraction form
   11,078.10/15,279.14 = 7,099.59/x
3. Step 3: Cross multiply
   11,078.10x = 15,279.14 × 7,099.59
4. Step 4: Simplify right side
   11,078.10x = 108,475,629.55
5. Step 5: Solve for x
   x = 108,475,629.55/11,078.10
6. Step 6: Final answer
   x = 9,791.90