Finding the Fourth Proportional to 9,151.16, 12,628.73 and 5,118.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,151.16 : 12,628.73 = 5,118.42 : x
2. Step 2: Convert to fraction form
   9,151.16/12,628.73 = 5,118.42/x
3. Step 3: Cross multiply
   9,151.16x = 12,628.73 × 5,118.42
4. Step 4: Simplify right side
   9,151.16x = 64,639,157.00
5. Step 5: Solve for x
   x = 64,639,157.00/9,151.16
6. Step 6: Final answer
   x = 7,063.50