Finding the Fourth Proportional to 9,344.72, 12,895.81 and 5,153.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,344.72 : 12,895.81 = 5,153.12 : x
2. Step 2: Convert to fraction form
   9,344.72/12,895.81 = 5,153.12/x
3. Step 3: Cross multiply
   9,344.72x = 12,895.81 × 5,153.12
4. Step 4: Simplify right side
   9,344.72x = 66,453,656.43
5. Step 5: Solve for x
   x = 66,453,656.43/9,344.72
6. Step 6: Final answer
   x = 7,111.36