Finding the Fourth Proportional to 17,078.55, 25,637.03 and 13,200.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,078.55 : 25,637.03 = 13,200.15 : x
2. Step 2: Convert to fraction form
   17,078.55/25,637.03 = 13,200.15/x
3. Step 3: Cross multiply
   17,078.55x = 25,637.03 × 13,200.15
4. Step 4: Simplify right side
   17,078.55x = 338,412,575.55
5. Step 5: Solve for x
   x = 338,412,575.55/17,078.55
6. Step 6: Final answer
   x = 19,815.06