Finding the Fourth Proportional to 9,314.88, 12,854.28 and 5,123.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,314.88 : 12,854.28 = 5,123.14 : x
2. Step 2: Convert to fraction form
   9,314.88/12,854.28 = 5,123.14/x
3. Step 3: Cross multiply
   9,314.88x = 12,854.28 × 5,123.14
4. Step 4: Simplify right side
   9,314.88x = 65,854,276.04
5. Step 5: Solve for x
   x = 65,854,276.04/9,314.88
6. Step 6: Final answer
   x = 7,069.79