Finding the Fourth Proportional to 17,091.93, 25,637.73 and 5,405.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,091.93 : 25,637.73 = 5,405.15 : x
2. Step 2: Convert to fraction form
   17,091.93/25,637.73 = 5,405.15/x
3. Step 3: Cross multiply
   17,091.93x = 25,637.73 × 5,405.15
4. Step 4: Simplify right side
   17,091.93x = 138,575,776.31
5. Step 5: Solve for x
   x = 138,575,776.31/17,091.93
6. Step 6: Final answer
   x = 8,107.67