Finding the Fourth Proportional to 17,077.71, 25,617.78 and 5,390.63

Step by Step Solution

1. Step 1: Write the proportion equation
   17,077.71 : 25,617.78 = 5,390.63 : x
2. Step 2: Convert to fraction form
   17,077.71/25,617.78 = 5,390.63/x
3. Step 3: Cross multiply
   17,077.71x = 25,617.78 × 5,390.63
4. Step 4: Simplify right side
   17,077.71x = 138,095,845.31
5. Step 5: Solve for x
   x = 138,095,845.31/17,077.71
6. Step 6: Final answer
   x = 8,086.32