Finding the Fourth Proportional to 11,581.88, 15,979.28 and 7,103.39

Step by Step Solution

1. Step 1: Write the proportion equation
   11,581.88 : 15,979.28 = 7,103.39 : x
2. Step 2: Convert to fraction form
   11,581.88/15,979.28 = 7,103.39/x
3. Step 3: Cross multiply
   11,581.88x = 15,979.28 × 7,103.39
4. Step 4: Simplify right side
   11,581.88x = 113,506,942.35
5. Step 5: Solve for x
   x = 113,506,942.35/11,581.88
6. Step 6: Final answer
   x = 9,800.39