Finding the Fourth Proportional to 7,327.15, 10,111.46 and 3,970.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,327.15 : 10,111.46 = 3,970.05 : x
2. Step 2: Convert to fraction form
   7,327.15/10,111.46 = 3,970.05/x
3. Step 3: Cross multiply
   7,327.15x = 10,111.46 × 3,970.05
4. Step 4: Simplify right side
   7,327.15x = 40,143,001.77
5. Step 5: Solve for x
   x = 40,143,001.77/7,327.15
6. Step 6: Final answer
   x = 5,478.67