Finding the Fourth Proportional to 9,314.60, 12,854.77 and 5,123.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,314.60 : 12,854.77 = 5,123.12 : x
2. Step 2: Convert to fraction form
   9,314.60/12,854.77 = 5,123.12/x
3. Step 3: Cross multiply
   9,314.60x = 12,854.77 × 5,123.12
4. Step 4: Simplify right side
   9,314.60x = 65,856,452.20
5. Step 5: Solve for x
   x = 65,856,452.20/9,314.60
6. Step 6: Final answer
   x = 7,070.24