Finding the Fourth Proportional to 53,003.49, 79,504.83 and 13,560.54

Step by Step Solution

1. Step 1: Write the proportion equation
   53,003.49 : 79,504.83 = 13,560.54 : x
2. Step 2: Convert to fraction form
   53,003.49/79,504.83 = 13,560.54/x
3. Step 3: Cross multiply
   53,003.49x = 79,504.83 × 13,560.54
4. Step 4: Simplify right side
   53,003.49x = 1,078,128,427.41
5. Step 5: Solve for x
   x = 1,078,128,427.41/53,003.49
6. Step 6: Final answer
   x = 20,340.71