Finding the Fourth Proportional to 16,490.27, 22,755.48 and 10,521.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,490.27 : 22,755.48 = 10,521.30 : x
2. Step 2: Convert to fraction form
   16,490.27/22,755.48 = 10,521.30/x
3. Step 3: Cross multiply
   16,490.27x = 22,755.48 × 10,521.30
4. Step 4: Simplify right side
   16,490.27x = 239,417,231.72
5. Step 5: Solve for x
   x = 239,417,231.72/16,490.27
6. Step 6: Final answer
   x = 14,518.70