Finding the Fourth Proportional to 17,109.78, 25,669.53 and 12,065.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,109.78 : 25,669.53 = 12,065.10 : x
2. Step 2: Convert to fraction form
   17,109.78/25,669.53 = 12,065.10/x
3. Step 3: Cross multiply
   17,109.78x = 25,669.53 × 12,065.10
4. Step 4: Simplify right side
   17,109.78x = 309,705,446.40
5. Step 5: Solve for x
   x = 309,705,446.40/17,109.78
6. Step 6: Final answer
   x = 18,101.08