Finding the Fourth Proportional to 9,146.48, 13,719.76 and 2,572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.48 : 13,719.76 = 2,572.72 : x
2. Step 2: Convert to fraction form
   9,146.48/13,719.76 = 2,572.72/x
3. Step 3: Cross multiply
   9,146.48x = 13,719.76 × 2,572.72
4. Step 4: Simplify right side
   9,146.48x = 35,297,060.22
5. Step 5: Solve for x
   x = 35,297,060.22/9,146.48
6. Step 6: Final answer
   x = 3,859.09