Finding the Fourth Proportional to 9,147.05, 13,719.15 and 2,906.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.05 : 13,719.15 = 2,906.25 : x
2. Step 2: Convert to fraction form
   9,147.05/13,719.15 = 2,906.25/x
3. Step 3: Cross multiply
   9,147.05x = 13,719.15 × 2,906.25
4. Step 4: Simplify right side
   9,147.05x = 39,871,279.69
5. Step 5: Solve for x
   x = 39,871,279.69/9,147.05
6. Step 6: Final answer
   x = 4,358.92