Finding the Fourth Proportional to 7,327.36, 10,111.72 and 3,970.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,327.36 : 10,111.72 = 3,970.15 : x
2. Step 2: Convert to fraction form
   7,327.36/10,111.72 = 3,970.15/x
3. Step 3: Cross multiply
   7,327.36x = 10,111.72 × 3,970.15
4. Step 4: Simplify right side
   7,327.36x = 40,145,045.16
5. Step 5: Solve for x
   x = 40,145,045.16/7,327.36
6. Step 6: Final answer
   x = 5,478.79