Finding the Fourth Proportional to 9,109.16, 13,662.54 and 2,869.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,109.16 : 13,662.54 = 2,869.20 : x
2. Step 2: Convert to fraction form
   9,109.16/13,662.54 = 2,869.20/x
3. Step 3: Cross multiply
   9,109.16x = 13,662.54 × 2,869.20
4. Step 4: Simplify right side
   9,109.16x = 39,200,559.77
5. Step 5: Solve for x
   x = 39,200,559.77/9,109.16
6. Step 6: Final answer
   x = 4,303.42