Finding the Fourth Proportional to 9,372.16, 12,933.48 and 5,393.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,372.16 : 12,933.48 = 5,393.20 : x
2. Step 2: Convert to fraction form
   9,372.16/12,933.48 = 5,393.20/x
3. Step 3: Cross multiply
   9,372.16x = 12,933.48 × 5,393.20
4. Step 4: Simplify right side
   9,372.16x = 69,752,844.34
5. Step 5: Solve for x
   x = 69,752,844.34/9,372.16
6. Step 6: Final answer
   x = 7,442.56