Finding the Fourth Proportional to 13,031.69, 19,547.60 and 3,171.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,031.69 : 19,547.60 = 3,171.02 : x
2. Step 2: Convert to fraction form
   13,031.69/19,547.60 = 3,171.02/x
3. Step 3: Cross multiply
   13,031.69x = 19,547.60 × 3,171.02
4. Step 4: Simplify right side
   13,031.69x = 61,985,716.96
5. Step 5: Solve for x
   x = 61,985,716.96/13,031.69
6. Step 6: Final answer
   x = 4,756.54