Finding the Fourth Proportional to 12,971.55, 19,455.39 and 3,610.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,971.55 : 19,455.39 = 3,610.59 : x
2. Step 2: Convert to fraction form
   12,971.55/19,455.39 = 3,610.59/x
3. Step 3: Cross multiply
   12,971.55x = 19,455.39 × 3,610.59
4. Step 4: Simplify right side
   12,971.55x = 70,245,436.58
5. Step 5: Solve for x
   x = 70,245,436.58/12,971.55
6. Step 6: Final answer
   x = 5,415.35