Finding the Fourth Proportional to 17,109.77, 25,665.56 and 5,423.90

Step by Step Solution

1. Step 1: Write the proportion equation
   17,109.77 : 25,665.56 = 5,423.90 : x
2. Step 2: Convert to fraction form
   17,109.77/25,665.56 = 5,423.90/x
3. Step 3: Cross multiply
   17,109.77x = 25,665.56 × 5,423.90
4. Step 4: Simplify right side
   17,109.77x = 139,207,275.44
5. Step 5: Solve for x
   x = 139,207,275.44/17,109.77
6. Step 6: Final answer
   x = 8,136.13