Finding the Fourth Proportional to 39,468.08, 59,196.72 and 13,172.24

Step by Step Solution

1. Step 1: Write the proportion equation
   39,468.08 : 59,196.72 = 13,172.24 : x
2. Step 2: Convert to fraction form
   39,468.08/59,196.72 = 13,172.24/x
3. Step 3: Cross multiply
   39,468.08x = 59,196.72 × 13,172.24
4. Step 4: Simplify right side
   39,468.08x = 779,753,403.05
5. Step 5: Solve for x
   x = 779,753,403.05/39,468.08
6. Step 6: Final answer
   x = 19,756.56