Finding the Fourth Proportional to 16,978.68, 25,468.20 and 5,132.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.68 : 25,468.20 = 5,132.55 : x
2. Step 2: Convert to fraction form
   16,978.68/25,468.20 = 5,132.55/x
3. Step 3: Cross multiply
   16,978.68x = 25,468.20 × 5,132.55
4. Step 4: Simplify right side
   16,978.68x = 130,716,809.91
5. Step 5: Solve for x
   x = 130,716,809.91/16,978.68
6. Step 6: Final answer
   x = 7,698.88