Finding the Fourth Proportional to 11,289.95, 15,582.72 and 7,513.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,289.95 : 15,582.72 = 7,513.28 : x
2. Step 2: Convert to fraction form
   11,289.95/15,582.72 = 7,513.28/x
3. Step 3: Cross multiply
   11,289.95x = 15,582.72 × 7,513.28
4. Step 4: Simplify right side
   11,289.95x = 117,077,338.52
5. Step 5: Solve for x
   x = 117,077,338.52/11,289.95
6. Step 6: Final answer
   x = 10,370.05