Finding the Fourth Proportional to 9,182.78, 12,672.18 and 5,203.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,182.78 : 12,672.18 = 5,203.79 : x
2. Step 2: Convert to fraction form
   9,182.78/12,672.18 = 5,203.79/x
3. Step 3: Cross multiply
   9,182.78x = 12,672.18 × 5,203.79
4. Step 4: Simplify right side
   9,182.78x = 65,943,300.20
5. Step 5: Solve for x
   x = 65,943,300.20/9,182.78
6. Step 6: Final answer
   x = 7,181.20