Finding the Fourth Proportional to 13,550.10, 20,326.52 and 3,690.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,550.10 : 20,326.52 = 3,690.16 : x
2. Step 2: Convert to fraction form
   13,550.10/20,326.52 = 3,690.16/x
3. Step 3: Cross multiply
   13,550.10x = 20,326.52 × 3,690.16
4. Step 4: Simplify right side
   13,550.10x = 75,008,111.04
5. Step 5: Solve for x
   x = 75,008,111.04/13,550.10
6. Step 6: Final answer
   x = 5,535.61