Finding the Fourth Proportional to 21,957,443.28, 30,302,436.96 and 12,168,956.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,957,443.28 : 30,302,436.96 = 12,168,956.16 : x
2. Step 2: Convert to fraction form
   21,957,443.28/30,302,436.96 = 12,168,956.16/x
3. Step 3: Cross multiply
   21,957,443.28x = 30,302,436.96 × 12,168,956.16
4. Step 4: Simplify right side
   21,957,443.28x = 368,749,026,907,403.69
5. Step 5: Solve for x
   x = 368,749,026,907,403.69/21,957,443.28
6. Step 6: Final answer
   x = 16,793,805.28