Finding the Fourth Proportional to 17,112.60, 25,662.84 and 10,518.96

Step by Step Solution

1. Step 1: Write the proportion equation
   17,112.60 : 25,662.84 = 10,518.96 : x
2. Step 2: Convert to fraction form
   17,112.60/25,662.84 = 10,518.96/x
3. Step 3: Cross multiply
   17,112.60x = 25,662.84 × 10,518.96
4. Step 4: Simplify right side
   17,112.60x = 269,946,387.45
5. Step 5: Solve for x
   x = 269,946,387.45/17,112.60
6. Step 6: Final answer
   x = 15,774.71