Finding the Fourth Proportional to 16,867.99, 25,300.77 and 5,180.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,867.99 : 25,300.77 = 5,180.50 : x
2. Step 2: Convert to fraction form
   16,867.99/25,300.77 = 5,180.50/x
3. Step 3: Cross multiply
   16,867.99x = 25,300.77 × 5,180.50
4. Step 4: Simplify right side
   16,867.99x = 131,070,638.99
5. Step 5: Solve for x
   x = 131,070,638.99/16,867.99
6. Step 6: Final answer
   x = 7,770.38