Finding the Fourth Proportional to 9,376.62, 12,942.53 and 5,400.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,376.62 : 12,942.53 = 5,400.53 : x
2. Step 2: Convert to fraction form
   9,376.62/12,942.53 = 5,400.53/x
3. Step 3: Cross multiply
   9,376.62x = 12,942.53 × 5,400.53
4. Step 4: Simplify right side
   9,376.62x = 69,896,429.83
5. Step 5: Solve for x
   x = 69,896,429.83/9,376.62
6. Step 6: Final answer
   x = 7,454.33