Finding the Fourth Proportional to 16,128,441.78, 24,152,829.21 and 12,019,910.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128,441.78 : 24,152,829.21 = 12,019,910.78 : x
2. Step 2: Convert to fraction form
   16,128,441.78/24,152,829.21 = 12,019,910.78/x
3. Step 3: Cross multiply
   16,128,441.78x = 24,152,829.21 × 12,019,910.78
4. Step 4: Simplify right side
   16,128,441.78x = 290,314,852,068,013.75
5. Step 5: Solve for x
   x = 290,314,852,068,013.75/16,128,441.78
6. Step 6: Final answer
   x = 18,000,179.81