Finding the Fourth Proportional to 7,090.72, 10,635.72 and 2,160.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,090.72 : 10,635.72 = 2,160.25 : x
2. Step 2: Convert to fraction form
   7,090.72/10,635.72 = 2,160.25/x
3. Step 3: Cross multiply
   7,090.72x = 10,635.72 × 2,160.25
4. Step 4: Simplify right side
   7,090.72x = 22,975,814.13
5. Step 5: Solve for x
   x = 22,975,814.13/7,090.72
6. Step 6: Final answer
   x = 3,240.27