Finding the Fourth Proportional to 28,494.56, 42,745.88 and 8,774.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,494.56 : 42,745.88 = 8,774.72 : x
2. Step 2: Convert to fraction form
   28,494.56/42,745.88 = 8,774.72/x
3. Step 3: Cross multiply
   28,494.56x = 42,745.88 × 8,774.72
4. Step 4: Simplify right side
   28,494.56x = 375,083,128.15
5. Step 5: Solve for x
   x = 375,083,128.15/28,494.56
6. Step 6: Final answer
   x = 13,163.32