Finding the Fourth Proportional to 9,111.27, 13,668.27 and 2,870.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.27 : 13,668.27 = 2,870.63 : x
2. Step 2: Convert to fraction form
   9,111.27/13,668.27 = 2,870.63/x
3. Step 3: Cross multiply
   9,111.27x = 13,668.27 × 2,870.63
4. Step 4: Simplify right side
   9,111.27x = 39,236,463.22
5. Step 5: Solve for x
   x = 39,236,463.22/9,111.27
6. Step 6: Final answer
   x = 4,306.37