Finding the Fourth Proportional to 35,828.06, 53,721.18 and 13,642.96

Step by Step Solution

1. Step 1: Write the proportion equation
   35,828.06 : 53,721.18 = 13,642.96 : x
2. Step 2: Convert to fraction form
   35,828.06/53,721.18 = 13,642.96/x
3. Step 3: Cross multiply
   35,828.06x = 53,721.18 × 13,642.96
4. Step 4: Simplify right side
   35,828.06x = 732,915,909.89
5. Step 5: Solve for x
   x = 732,915,909.89/35,828.06
6. Step 6: Final answer
   x = 20,456.48