Finding the Fourth Proportional to 9,129.54, 12,598.56 and 5,150.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.54 : 12,598.56 = 5,150.56 : x
2. Step 2: Convert to fraction form
   9,129.54/12,598.56 = 5,150.56/x
3. Step 3: Cross multiply
   9,129.54x = 12,598.56 × 5,150.56
4. Step 4: Simplify right side
   9,129.54x = 64,889,639.19
5. Step 5: Solve for x
   x = 64,889,639.19/9,129.54
6. Step 6: Final answer
   x = 7,107.66