Finding the Fourth Proportional to 7,088.72, 10,620.24 and 3,965

Step by Step Solution

1. Step 1: Write the proportion equation
   7,088.72 : 10,620.24 = 3,965 : x
2. Step 2: Convert to fraction form
   7,088.72/10,620.24 = 3,965/x
3. Step 3: Cross multiply
   7,088.72x = 10,620.24 × 3,965
4. Step 4: Simplify right side
   7,088.72x = 42,109,251.60
5. Step 5: Solve for x
   x = 42,109,251.60/7,088.72
6. Step 6: Final answer
   x = 5,940.32