Finding the Fourth Proportional to 9,657.72, 13,326.52 and 5,408.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,657.72 : 13,326.52 = 5,408.19 : x
2. Step 2: Convert to fraction form
   9,657.72/13,326.52 = 5,408.19/x
3. Step 3: Cross multiply
   9,657.72x = 13,326.52 × 5,408.19
4. Step 4: Simplify right side
   9,657.72x = 72,072,352.20
5. Step 5: Solve for x
   x = 72,072,352.20/9,657.72
6. Step 6: Final answer
   x = 7,462.67