Finding the Fourth Proportional to 9,150.72, 13,726.28 and 2,910.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150.72 : 13,726.28 = 2,910.72 : x
2. Step 2: Convert to fraction form
   9,150.72/13,726.28 = 2,910.72/x
3. Step 3: Cross multiply
   9,150.72x = 13,726.28 × 2,910.72
4. Step 4: Simplify right side
   9,150.72x = 39,953,357.72
5. Step 5: Solve for x
   x = 39,953,357.72/9,150.72
6. Step 6: Final answer
   x = 4,366.14