Finding the Fourth Proportional to 9,372.72, 12,932.82 and 5,393.64

Step by Step Solution

1. Step 1: Write the proportion equation
   9,372.72 : 12,932.82 = 5,393.64 : x
2. Step 2: Convert to fraction form
   9,372.72/12,932.82 = 5,393.64/x
3. Step 3: Cross multiply
   9,372.72x = 12,932.82 × 5,393.64
4. Step 4: Simplify right side
   9,372.72x = 69,754,975.26
5. Step 5: Solve for x
   x = 69,754,975.26/9,372.72
6. Step 6: Final answer
   x = 7,442.34