Finding the Fourth Proportional to 11,353.89, 15,671.84 and 7,320.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,353.89 : 15,671.84 = 7,320.72 : x
2. Step 2: Convert to fraction form
   11,353.89/15,671.84 = 7,320.72/x
3. Step 3: Cross multiply
   11,353.89x = 15,671.84 × 7,320.72
4. Step 4: Simplify right side
   11,353.89x = 114,729,127.72
5. Step 5: Solve for x
   x = 114,729,127.72/11,353.89
6. Step 6: Final answer
   x = 10,104.83