Finding the Fourth Proportional to 21,918,018.72, 30,222,113.68 and 16,393,689.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,918,018.72 : 30,222,113.68 = 16,393,689.48 : x
2. Step 2: Convert to fraction form
   21,918,018.72/30,222,113.68 = 16,393,689.48/x
3. Step 3: Cross multiply
   21,918,018.72x = 30,222,113.68 × 16,393,689.48
4. Step 4: Simplify right side
   21,918,018.72x = 495,451,947,099,180.12
5. Step 5: Solve for x
   x = 495,451,947,099,180.12/21,918,018.72
6. Step 6: Final answer
   x = 22,604,777.99