Finding the Fourth Proportional to 9,372.88, 12,935.15 and 5,393.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,372.88 : 12,935.15 = 5,393.91 : x
2. Step 2: Convert to fraction form
   9,372.88/12,935.15 = 5,393.91/x
3. Step 3: Cross multiply
   9,372.88x = 12,935.15 × 5,393.91
4. Step 4: Simplify right side
   9,372.88x = 69,771,034.94
5. Step 5: Solve for x
   x = 69,771,034.94/9,372.88
6. Step 6: Final answer
   x = 7,443.93