Finding the Fourth Proportional to 9,691.60, 13,373.36 and 5,443.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,691.60 : 13,373.36 = 5,443.12 : x
2. Step 2: Convert to fraction form
   9,691.60/13,373.36 = 5,443.12/x
3. Step 3: Cross multiply
   9,691.60x = 13,373.36 × 5,443.12
4. Step 4: Simplify right side
   9,691.60x = 72,792,709.20
5. Step 5: Solve for x
   x = 72,792,709.20/9,691.60
6. Step 6: Final answer
   x = 7,510.91