Finding the Fourth Proportional to 7,327.50, 10,111.86 and 3,970.32

Step by Step Solution

1. Step 1: Write the proportion equation
   7,327.50 : 10,111.86 = 3,970.32 : x
2. Step 2: Convert to fraction form
   7,327.50/10,111.86 = 3,970.32/x
3. Step 3: Cross multiply
   7,327.50x = 10,111.86 × 3,970.32
4. Step 4: Simplify right side
   7,327.50x = 40,147,320.00
5. Step 5: Solve for x
   x = 40,147,320.00/7,327.50
6. Step 6: Final answer
   x = 5,478.99