Finding the Fourth Proportional to 17,091.12, 25,636.84 and 5,404.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,091.12 : 25,636.84 = 5,404.40 : x
2. Step 2: Convert to fraction form
   17,091.12/25,636.84 = 5,404.40/x
3. Step 3: Cross multiply
   17,091.12x = 25,636.84 × 5,404.40
4. Step 4: Simplify right side
   17,091.12x = 138,551,738.10
5. Step 5: Solve for x
   x = 138,551,738.10/17,091.12
6. Step 6: Final answer
   x = 8,106.65