Finding the Fourth Proportional to 8,091.36, 12,130.56 and 3,160.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.36 : 12,130.56 = 3,160.08 : x
2. Step 2: Convert to fraction form
   8,091.36/12,130.56 = 3,160.08/x
3. Step 3: Cross multiply
   8,091.36x = 12,130.56 × 3,160.08
4. Step 4: Simplify right side
   8,091.36x = 38,333,540.04
5. Step 5: Solve for x
   x = 38,333,540.04/8,091.36
6. Step 6: Final answer
   x = 4,737.59