Finding the Fourth Proportional to 9,050.68, 12,489.94 and 5,513.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,050.68 : 12,489.94 = 5,513.89 : x
2. Step 2: Convert to fraction form
   9,050.68/12,489.94 = 5,513.89/x
3. Step 3: Cross multiply
   9,050.68x = 12,489.94 × 5,513.89
4. Step 4: Simplify right side
   9,050.68x = 68,868,155.27
5. Step 5: Solve for x
   x = 68,868,155.27/9,050.68
6. Step 6: Final answer
   x = 7,609.17