Finding the Fourth Proportional to 9,357.53, 12,915.55 and 5,380.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,357.53 : 12,915.55 = 5,380.93 : x
2. Step 2: Convert to fraction form
   9,357.53/12,915.55 = 5,380.93/x
3. Step 3: Cross multiply
   9,357.53x = 12,915.55 × 5,380.93
4. Step 4: Simplify right side
   9,357.53x = 69,497,693.33
5. Step 5: Solve for x
   x = 69,497,693.33/9,357.53
6. Step 6: Final answer
   x = 7,426.93