Finding the Fourth Proportional to 21,485.93, 32,235.72 and 13,637.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,485.93 : 32,235.72 = 13,637.33 : x
2. Step 2: Convert to fraction form
   21,485.93/32,235.72 = 13,637.33/x
3. Step 3: Cross multiply
   21,485.93x = 32,235.72 × 13,637.33
4. Step 4: Simplify right side
   21,485.93x = 439,609,162.27
5. Step 5: Solve for x
   x = 439,609,162.27/21,485.93
6. Step 6: Final answer
   x = 20,460.33