Finding the Fourth Proportional to 16,230.74, 22,398.72 and 9,521.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,230.74 : 22,398.72 = 9,521.48 : x
2. Step 2: Convert to fraction form
   16,230.74/22,398.72 = 9,521.48/x
3. Step 3: Cross multiply
   16,230.74x = 22,398.72 × 9,521.48
4. Step 4: Simplify right side
   16,230.74x = 213,268,964.51
5. Step 5: Solve for x
   x = 213,268,964.51/16,230.74
6. Step 6: Final answer
   x = 13,139.82