Finding the Fourth Proportional to 8,731.63, 13,097.69 and 3,189.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,731.63 : 13,097.69 = 3,189.10 : x
2. Step 2: Convert to fraction form
   8,731.63/13,097.69 = 3,189.10/x
3. Step 3: Cross multiply
   8,731.63x = 13,097.69 × 3,189.10
4. Step 4: Simplify right side
   8,731.63x = 41,769,843.18
5. Step 5: Solve for x
   x = 41,769,843.18/8,731.63
6. Step 6: Final answer
   x = 4,783.74