Finding the Fourth Proportional to 9,147.20, 13,720.73 and 2,573.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.20 : 13,720.73 = 2,573.34 : x
2. Step 2: Convert to fraction form
   9,147.20/13,720.73 = 2,573.34/x
3. Step 3: Cross multiply
   9,147.20x = 13,720.73 × 2,573.34
4. Step 4: Simplify right side
   9,147.20x = 35,308,039.02
5. Step 5: Solve for x
   x = 35,308,039.02/9,147.20
6. Step 6: Final answer
   x = 3,859.99