Finding the Fourth Proportional to 7,515.36, 10,370.72 and 4,111.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,515.36 : 10,370.72 = 4,111.68 : x
2. Step 2: Convert to fraction form
   7,515.36/10,370.72 = 4,111.68/x
3. Step 3: Cross multiply
   7,515.36x = 10,370.72 × 4,111.68
4. Step 4: Simplify right side
   7,515.36x = 42,641,082.01
5. Step 5: Solve for x
   x = 42,641,082.01/7,515.36
6. Step 6: Final answer
   x = 5,673.86