Finding the Fourth Proportional to 17,078.48, 25,614.84 and 5,390

Step by Step Solution

1. Step 1: Write the proportion equation
   17,078.48 : 25,614.84 = 5,390 : x
2. Step 2: Convert to fraction form
   17,078.48/25,614.84 = 5,390/x
3. Step 3: Cross multiply
   17,078.48x = 25,614.84 × 5,390
4. Step 4: Simplify right side
   17,078.48x = 138,063,987.60
5. Step 5: Solve for x
   x = 138,063,987.60/17,078.48
6. Step 6: Final answer
   x = 8,084.09