Finding the Fourth Proportional to 53,017.69, 79,526.12 and 13,036.49

Step by Step Solution

1. Step 1: Write the proportion equation
   53,017.69 : 79,526.12 = 13,036.49 : x
2. Step 2: Convert to fraction form
   53,017.69/79,526.12 = 13,036.49/x
3. Step 3: Cross multiply
   53,017.69x = 79,526.12 × 13,036.49
4. Step 4: Simplify right side
   53,017.69x = 1,036,741,468.12
5. Step 5: Solve for x
   x = 1,036,741,468.12/53,017.69
6. Step 6: Final answer
   x = 19,554.63