Finding the Fourth Proportional to 11,091, 15,305.57 and 7,112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,091 : 15,305.57 = 7,112.10 : x
2. Step 2: Convert to fraction form
   11,091/15,305.57 = 7,112.10/x
3. Step 3: Cross multiply
   11,091x = 15,305.57 × 7,112.10
4. Step 4: Simplify right side
   11,091x = 108,854,744.40
5. Step 5: Solve for x
   x = 108,854,744.40/11,091
6. Step 6: Final answer
   x = 9,814.69