Finding the Fourth Proportional to 11,422.28, 15,756.73 and 9,300.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,422.28 : 15,756.73 = 9,300.22 : x
2. Step 2: Convert to fraction form
   11,422.28/15,756.73 = 9,300.22/x
3. Step 3: Cross multiply
   11,422.28x = 15,756.73 × 9,300.22
4. Step 4: Simplify right side
   11,422.28x = 146,540,992.84
5. Step 5: Solve for x
   x = 146,540,992.84/11,422.28
6. Step 6: Final answer
   x = 12,829.40