Finding the Fourth Proportional to 9,153.84, 12,632.76 and 5,121.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.84 : 12,632.76 = 5,121.12 : x
2. Step 2: Convert to fraction form
   9,153.84/12,632.76 = 5,121.12/x
3. Step 3: Cross multiply
   9,153.84x = 12,632.76 × 5,121.12
4. Step 4: Simplify right side
   9,153.84x = 64,693,879.89
5. Step 5: Solve for x
   x = 64,693,879.89/9,153.84
6. Step 6: Final answer
   x = 7,067.40