Finding the Fourth Proportional to 9,314.36, 12,854.06 and 5,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,314.36 : 12,854.06 = 5,122.72 : x
2. Step 2: Convert to fraction form
   9,314.36/12,854.06 = 5,122.72/x
3. Step 3: Cross multiply
   9,314.36x = 12,854.06 × 5,122.72
4. Step 4: Simplify right side
   9,314.36x = 65,847,750.24
5. Step 5: Solve for x
   x = 65,847,750.24/9,314.36
6. Step 6: Final answer
   x = 7,069.49