Finding the Fourth Proportional to 9,150.17, 12,628.11 and 5,615.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.17 : 12,628.11 = 5,615.69 : x
2. Step 2: Convert to fraction form
   9,150.17/12,628.11 = 5,615.69/x
3. Step 3: Cross multiply
   9,150.17x = 12,628.11 × 5,615.69
4. Step 4: Simplify right side
   9,150.17x = 70,915,487.91
5. Step 5: Solve for x
   x = 70,915,487.91/9,150.17
6. Step 6: Final answer
   x = 7,750.19