Finding the Fourth Proportional to 9,140.55, 12,613.83 and 5,162.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,140.55 : 12,613.83 = 5,162.94 : x
2. Step 2: Convert to fraction form
   9,140.55/12,613.83 = 5,162.94/x
3. Step 3: Cross multiply
   9,140.55x = 12,613.83 × 5,162.94
4. Step 4: Simplify right side
   9,140.55x = 65,124,428.10
5. Step 5: Solve for x
   x = 65,124,428.10/9,140.55
6. Step 6: Final answer
   x = 7,124.79