Finding the Fourth Proportional to 9,059.28, 13,643.34 and 7,975.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,059.28 : 13,643.34 = 7,975.60 : x
2. Step 2: Convert to fraction form
   9,059.28/13,643.34 = 7,975.60/x
3. Step 3: Cross multiply
   9,059.28x = 13,643.34 × 7,975.60
4. Step 4: Simplify right side
   9,059.28x = 108,813,822.50
5. Step 5: Solve for x
   x = 108,813,822.50/9,059.28
6. Step 6: Final answer
   x = 12,011.31