Finding the Fourth Proportional to 16,835.47, 25,250.77 and 5,145.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,835.47 : 25,250.77 = 5,145.55 : x
2. Step 2: Convert to fraction form
   16,835.47/25,250.77 = 5,145.55/x
3. Step 3: Cross multiply
   16,835.47x = 25,250.77 × 5,145.55
4. Step 4: Simplify right side
   16,835.47x = 129,929,099.57
5. Step 5: Solve for x
   x = 129,929,099.57/16,835.47
6. Step 6: Final answer
   x = 7,717.58