Finding the Fourth Proportional to 11,091.63, 15,309.04 and 7,315.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,091.63 : 15,309.04 = 7,315.47 : x
2. Step 2: Convert to fraction form
   11,091.63/15,309.04 = 7,315.47/x
3. Step 3: Cross multiply
   11,091.63x = 15,309.04 × 7,315.47
4. Step 4: Simplify right side
   11,091.63x = 111,992,822.85
5. Step 5: Solve for x
   x = 111,992,822.85/11,091.63
6. Step 6: Final answer
   x = 10,097.06