Finding the Fourth Proportional to 9,310.56, 12,848.48 and 5,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,310.56 : 12,848.48 = 5,118.72 : x
2. Step 2: Convert to fraction form
   9,310.56/12,848.48 = 5,118.72/x
3. Step 3: Cross multiply
   9,310.56x = 12,848.48 × 5,118.72
4. Step 4: Simplify right side
   9,310.56x = 65,767,771.55
5. Step 5: Solve for x
   x = 65,767,771.55/9,310.56
6. Step 6: Final answer
   x = 7,063.78