Finding the Fourth Proportional to 11,196.52, 15,433.41 and 9,400.45

Step by Step Solution

1. Step 1: Write the proportion equation
   11,196.52 : 15,433.41 = 9,400.45 : x
2. Step 2: Convert to fraction form
   11,196.52/15,433.41 = 9,400.45/x
3. Step 3: Cross multiply
   11,196.52x = 15,433.41 × 9,400.45
4. Step 4: Simplify right side
   11,196.52x = 145,080,999.03
5. Step 5: Solve for x
   x = 145,080,999.03/11,196.52
6. Step 6: Final answer
   x = 12,957.69