Finding the Fourth Proportional to 9,129.35, 12,598.50 and 5,150.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.35 : 12,598.50 = 5,150.49 : x
2. Step 2: Convert to fraction form
   9,129.35/12,598.50 = 5,150.49/x
3. Step 3: Cross multiply
   9,129.35x = 12,598.50 × 5,150.49
4. Step 4: Simplify right side
   9,129.35x = 64,888,448.27
5. Step 5: Solve for x
   x = 64,888,448.27/9,129.35
6. Step 6: Final answer
   x = 7,107.68