Finding the Fourth Proportional to 7,431.89, 11,133.59 and 3,729.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,431.89 : 11,133.59 = 3,729.78 : x
2. Step 2: Convert to fraction form
   7,431.89/11,133.59 = 3,729.78/x
3. Step 3: Cross multiply
   7,431.89x = 11,133.59 × 3,729.78
4. Step 4: Simplify right side
   7,431.89x = 41,525,822.66
5. Step 5: Solve for x
   x = 41,525,822.66/7,431.89
6. Step 6: Final answer
   x = 5,587.52