Finding the Fourth Proportional to 21,950.28, 30,298.20 and 12,525.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,950.28 : 30,298.20 = 12,525.12 : x
2. Step 2: Convert to fraction form
   21,950.28/30,298.20 = 12,525.12/x
3. Step 3: Cross multiply
   21,950.28x = 30,298.20 × 12,525.12
4. Step 4: Simplify right side
   21,950.28x = 379,488,590.78
5. Step 5: Solve for x
   x = 379,488,590.78/21,950.28
6. Step 6: Final answer
   x = 17,288.55