Finding the Fourth Proportional to 7,500.09, 10,354.55 and 5,145.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,500.09 : 10,354.55 = 5,145.69 : x
2. Step 2: Convert to fraction form
   7,500.09/10,354.55 = 5,145.69/x
3. Step 3: Cross multiply
   7,500.09x = 10,354.55 × 5,145.69
4. Step 4: Simplify right side
   7,500.09x = 53,281,304.39
5. Step 5: Solve for x
   x = 53,281,304.39/7,500.09
6. Step 6: Final answer
   x = 7,104.09