Finding the Fourth Proportional to 8,322.55, 12,452.56 and 4,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,322.55 : 12,452.56 = 4,978.50 : x
2. Step 2: Convert to fraction form
   8,322.55/12,452.56 = 4,978.50/x
3. Step 3: Cross multiply
   8,322.55x = 12,452.56 × 4,978.50
4. Step 4: Simplify right side
   8,322.55x = 61,995,069.96
5. Step 5: Solve for x
   x = 61,995,069.96/8,322.55
6. Step 6: Final answer
   x = 7,449.05