Finding the Fourth Proportional to 11,356.28, 15,662.78 and 7,378.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,356.28 : 15,662.78 = 7,378.69 : x
2. Step 2: Convert to fraction form
   11,356.28/15,662.78 = 7,378.69/x
3. Step 3: Cross multiply
   11,356.28x = 15,662.78 × 7,378.69
4. Step 4: Simplify right side
   11,356.28x = 115,570,749.78
5. Step 5: Solve for x
   x = 115,570,749.78/11,356.28
6. Step 6: Final answer
   x = 10,176.81