Finding the Fourth Proportional to 13,557.98, 20,334.88 and 3,698.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,557.98 : 20,334.88 = 3,698.06 : x
2. Step 2: Convert to fraction form
   13,557.98/20,334.88 = 3,698.06/x
3. Step 3: Cross multiply
   13,557.98x = 20,334.88 × 3,698.06
4. Step 4: Simplify right side
   13,557.98x = 75,199,606.33
5. Step 5: Solve for x
   x = 75,199,606.33/13,557.98
6. Step 6: Final answer
   x = 5,546.52