Finding the Fourth Proportional to 17,105.99, 25,658.71 and 14,178.11

Step by Step Solution

1. Step 1: Write the proportion equation
   17,105.99 : 25,658.71 = 14,178.11 : x
2. Step 2: Convert to fraction form
   17,105.99/25,658.71 = 14,178.11/x
3. Step 3: Cross multiply
   17,105.99x = 25,658.71 × 14,178.11
4. Step 4: Simplify right side
   17,105.99x = 363,791,948.69
5. Step 5: Solve for x
   x = 363,791,948.69/17,105.99
6. Step 6: Final answer
   x = 21,266.94