Finding the Fourth Proportional to 9,111.91, 13,646.60 and 7,015.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.91 : 13,646.60 = 7,015.28 : x
2. Step 2: Convert to fraction form
   9,111.91/13,646.60 = 7,015.28/x
3. Step 3: Cross multiply
   9,111.91x = 13,646.60 × 7,015.28
4. Step 4: Simplify right side
   9,111.91x = 95,734,651.82
5. Step 5: Solve for x
   x = 95,734,651.82/9,111.91
6. Step 6: Final answer
   x = 10,506.54