Finding the Fourth Proportional to 13,498.02, 20,243.93 and 3,638.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,498.02 : 20,243.93 = 3,638.07 : x
2. Step 2: Convert to fraction form
   13,498.02/20,243.93 = 3,638.07/x
3. Step 3: Cross multiply
   13,498.02x = 20,243.93 × 3,638.07
4. Step 4: Simplify right side
   13,498.02x = 73,648,816.22
5. Step 5: Solve for x
   x = 73,648,816.22/13,498.02
6. Step 6: Final answer
   x = 5,456.27