Finding the Fourth Proportional to 35,606.40, 53,412.42 and 20,816.82

Step by Step Solution

1. Step 1: Write the proportion equation
   35,606.40 : 53,412.42 = 20,816.82 : x
2. Step 2: Convert to fraction form
   35,606.40/53,412.42 = 20,816.82/x
3. Step 3: Cross multiply
   35,606.40x = 53,412.42 × 20,816.82
4. Step 4: Simplify right side
   35,606.40x = 1,111,876,732.90
5. Step 5: Solve for x
   x = 1,111,876,732.90/35,606.40
6. Step 6: Final answer
   x = 31,226.88