Finding the Fourth Proportional to 21,951,880.64, 30,293,202.32 and 12,162,128.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,951,880.64 : 30,293,202.32 = 12,162,128.32 : x
2. Step 2: Convert to fraction form
   21,951,880.64/30,293,202.32 = 12,162,128.32/x
3. Step 3: Cross multiply
   21,951,880.64x = 30,293,202.32 × 12,162,128.32
4. Step 4: Simplify right side
   21,951,880.64x = 368,429,813,839,561.69
5. Step 5: Solve for x
   x = 368,429,813,839,561.69/21,951,880.64
6. Step 6: Final answer
   x = 16,783,519.37