Finding the Fourth Proportional to 9,591.36, 13,235.60 and 5,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,591.36 : 13,235.60 = 5,342.72 : x
2. Step 2: Convert to fraction form
   9,591.36/13,235.60 = 5,342.72/x
3. Step 3: Cross multiply
   9,591.36x = 13,235.60 × 5,342.72
4. Step 4: Simplify right side
   9,591.36x = 70,714,104.83
5. Step 5: Solve for x
   x = 70,714,104.83/9,591.36
6. Step 6: Final answer
   x = 7,372.69