Finding the Fourth Proportional to 9,054.79, 13,578.86 and 3,130.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.79 : 13,578.86 = 3,130.16 : x
2. Step 2: Convert to fraction form
   9,054.79/13,578.86 = 3,130.16/x
3. Step 3: Cross multiply
   9,054.79x = 13,578.86 × 3,130.16
4. Step 4: Simplify right side
   9,054.79x = 42,504,020.73
5. Step 5: Solve for x
   x = 42,504,020.73/9,054.79
6. Step 6: Final answer
   x = 4,694.09