Finding the Fourth Proportional to 9,153.18, 12,629.72 and 5,376.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.18 : 12,629.72 = 5,376.96 : x
2. Step 2: Convert to fraction form
   9,153.18/12,629.72 = 5,376.96/x
3. Step 3: Cross multiply
   9,153.18x = 12,629.72 × 5,376.96
4. Step 4: Simplify right side
   9,153.18x = 67,909,472.37
5. Step 5: Solve for x
   x = 67,909,472.37/9,153.18
6. Step 6: Final answer
   x = 7,419.22