Finding the Fourth Proportional to 9,642.78, 14,472.38 and 3,803.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,642.78 : 14,472.38 = 3,803.49 : x
2. Step 2: Convert to fraction form
   9,642.78/14,472.38 = 3,803.49/x
3. Step 3: Cross multiply
   9,642.78x = 14,472.38 × 3,803.49
4. Step 4: Simplify right side
   9,642.78x = 55,045,480.24
5. Step 5: Solve for x
   x = 55,045,480.24/9,642.78
6. Step 6: Final answer
   x = 5,708.47