Finding the Fourth Proportional to 22,898.98, 31,602.18 and 12,828.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,898.98 : 31,602.18 = 12,828.28 : x
2. Step 2: Convert to fraction form
   22,898.98/31,602.18 = 12,828.28/x
3. Step 3: Cross multiply
   22,898.98x = 31,602.18 × 12,828.28
4. Step 4: Simplify right side
   22,898.98x = 405,401,613.65
5. Step 5: Solve for x
   x = 405,401,613.65/22,898.98
6. Step 6: Final answer
   x = 17,703.92