Finding the Fourth Proportional to 7,080.30, 10,621.47 and 2,400.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,080.30 : 10,621.47 = 2,400.72 : x
2. Step 2: Convert to fraction form
   7,080.30/10,621.47 = 2,400.72/x
3. Step 3: Cross multiply
   7,080.30x = 10,621.47 × 2,400.72
4. Step 4: Simplify right side
   7,080.30x = 25,499,175.46
5. Step 5: Solve for x
   x = 25,499,175.46/7,080.30
6. Step 6: Final answer
   x = 3,601.43