Finding the Fourth Proportional to 11,162.48, 15,405.45 and 7,133

Step by Step Solution

1. Step 1: Write the proportion equation
   11,162.48 : 15,405.45 = 7,133 : x
2. Step 2: Convert to fraction form
   11,162.48/15,405.45 = 7,133/x
3. Step 3: Cross multiply
   11,162.48x = 15,405.45 × 7,133
4. Step 4: Simplify right side
   11,162.48x = 109,887,074.85
5. Step 5: Solve for x
   x = 109,887,074.85/11,162.48
6. Step 6: Final answer
   x = 9,844.32