Finding the Fourth Proportional to 9,358.93, 12,915.32 and 5,380.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,358.93 : 12,915.32 = 5,380.82 : x
2. Step 2: Convert to fraction form
   9,358.93/12,915.32 = 5,380.82/x
3. Step 3: Cross multiply
   9,358.93x = 12,915.32 × 5,380.82
4. Step 4: Simplify right side
   9,358.93x = 69,495,012.16
5. Step 5: Solve for x
   x = 69,495,012.16/9,358.93
6. Step 6: Final answer
   x = 7,425.53