Finding the Fourth Proportional to 53,007.47, 79,511.13 and 13,564.59

Step by Step Solution

1. Step 1: Write the proportion equation
   53,007.47 : 79,511.13 = 13,564.59 : x
2. Step 2: Convert to fraction form
   53,007.47/79,511.13 = 13,564.59/x
3. Step 3: Cross multiply
   53,007.47x = 79,511.13 × 13,564.59
4. Step 4: Simplify right side
   53,007.47x = 1,078,535,878.89
5. Step 5: Solve for x
   x = 1,078,535,878.89/53,007.47
6. Step 6: Final answer
   x = 20,346.87