Finding the Fourth Proportional to 16,612.72, 24,843.32 and 12,398.95

Step by Step Solution

1. Step 1: Write the proportion equation
   16,612.72 : 24,843.32 = 12,398.95 : x
2. Step 2: Convert to fraction form
   16,612.72/24,843.32 = 12,398.95/x
3. Step 3: Cross multiply
   16,612.72x = 24,843.32 × 12,398.95
4. Step 4: Simplify right side
   16,612.72x = 308,031,082.51
5. Step 5: Solve for x
   x = 308,031,082.51/16,612.72
6. Step 6: Final answer
   x = 18,541.88