Finding the Fourth Proportional to 9,314.56, 12,853.98 and 5,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,314.56 : 12,853.98 = 5,122.72 : x
2. Step 2: Convert to fraction form
   9,314.56/12,853.98 = 5,122.72/x
3. Step 3: Cross multiply
   9,314.56x = 12,853.98 × 5,122.72
4. Step 4: Simplify right side
   9,314.56x = 65,847,340.43
5. Step 5: Solve for x
   x = 65,847,340.43/9,314.56
6. Step 6: Final answer
   x = 7,069.29