Finding the Fourth Proportional to 13,470.10, 20,206.17 and 3,609.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,470.10 : 20,206.17 = 3,609.16 : x
2. Step 2: Convert to fraction form
   13,470.10/20,206.17 = 3,609.16/x
3. Step 3: Cross multiply
   13,470.10x = 20,206.17 × 3,609.16
4. Step 4: Simplify right side
   13,470.10x = 72,927,300.52
5. Step 5: Solve for x
   x = 72,927,300.52/13,470.10
6. Step 6: Final answer
   x = 5,414.01