Finding the Fourth Proportional to 7,109.52, 10,665.48 and 2,429.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,109.52 : 10,665.48 = 2,429.20 : x
2. Step 2: Convert to fraction form
   7,109.52/10,665.48 = 2,429.20/x
3. Step 3: Cross multiply
   7,109.52x = 10,665.48 × 2,429.20
4. Step 4: Simplify right side
   7,109.52x = 25,908,584.02
5. Step 5: Solve for x
   x = 25,908,584.02/7,109.52
6. Step 6: Final answer
   x = 3,644.21