Finding the Fourth Proportional to 12,325.10, 18,487.50 and 3,091.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,325.10 : 18,487.50 = 3,091.10 : x
2. Step 2: Convert to fraction form
   12,325.10/18,487.50 = 3,091.10/x
3. Step 3: Cross multiply
   12,325.10x = 18,487.50 × 3,091.10
4. Step 4: Simplify right side
   12,325.10x = 57,146,711.25
5. Step 5: Solve for x
   x = 57,146,711.25/12,325.10
6. Step 6: Final answer
   x = 4,636.61