Finding the Fourth Proportional to 32,812.88, 49,216.20 and 13,086.16

Step by Step Solution

1. Step 1: Write the proportion equation
   32,812.88 : 49,216.20 = 13,086.16 : x
2. Step 2: Convert to fraction form
   32,812.88/49,216.20 = 13,086.16/x
3. Step 3: Cross multiply
   32,812.88x = 49,216.20 × 13,086.16
4. Step 4: Simplify right side
   32,812.88x = 644,051,067.79
5. Step 5: Solve for x
   x = 644,051,067.79/32,812.88
6. Step 6: Final answer
   x = 19,628.00