Finding the Fourth Proportional to 17,031.55, 25,551.17 and 5,186.39

Step by Step Solution

1. Step 1: Write the proportion equation
   17,031.55 : 25,551.17 = 5,186.39 : x
2. Step 2: Convert to fraction form
   17,031.55/25,551.17 = 5,186.39/x
3. Step 3: Cross multiply
   17,031.55x = 25,551.17 × 5,186.39
4. Step 4: Simplify right side
   17,031.55x = 132,518,217.79
5. Step 5: Solve for x
   x = 132,518,217.79/17,031.55
6. Step 6: Final answer
   x = 7,780.75