Finding the Fourth Proportional to 7,158.72, 10,737.36 and 1,965.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,158.72 : 10,737.36 = 1,965.12 : x
2. Step 2: Convert to fraction form
   7,158.72/10,737.36 = 1,965.12/x
3. Step 3: Cross multiply
   7,158.72x = 10,737.36 × 1,965.12
4. Step 4: Simplify right side
   7,158.72x = 21,100,200.88
5. Step 5: Solve for x
   x = 21,100,200.88/7,158.72
6. Step 6: Final answer
   x = 2,947.48