Finding the Fourth Proportional to 7,665.53, 11,505.27 and 3,970.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,665.53 : 11,505.27 = 3,970.10 : x
2. Step 2: Convert to fraction form
   7,665.53/11,505.27 = 3,970.10/x
3. Step 3: Cross multiply
   7,665.53x = 11,505.27 × 3,970.10
4. Step 4: Simplify right side
   7,665.53x = 45,677,014.90
5. Step 5: Solve for x
   x = 45,677,014.90/7,665.53
6. Step 6: Final answer
   x = 5,958.76