Finding the Fourth Proportional to 19,962.72, 27,561.40 and 12,419.32

Step by Step Solution

1. Step 1: Write the proportion equation
   19,962.72 : 27,561.40 = 12,419.32 : x
2. Step 2: Convert to fraction form
   19,962.72/27,561.40 = 12,419.32/x
3. Step 3: Cross multiply
   19,962.72x = 27,561.40 × 12,419.32
4. Step 4: Simplify right side
   19,962.72x = 342,293,846.25
5. Step 5: Solve for x
   x = 342,293,846.25/19,962.72
6. Step 6: Final answer
   x = 17,146.65