Finding the Fourth Proportional to 8,734.55, 12,054.58 and 7,647.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,734.55 : 12,054.58 = 7,647.86 : x
2. Step 2: Convert to fraction form
   8,734.55/12,054.58 = 7,647.86/x
3. Step 3: Cross multiply
   8,734.55x = 12,054.58 × 7,647.86
4. Step 4: Simplify right side
   8,734.55x = 92,191,751.22
5. Step 5: Solve for x
   x = 92,191,751.22/8,734.55
6. Step 6: Final answer
   x = 10,554.84