Finding the Fourth Proportional to 21,832,659.92, 30,129,099.72 and 12,042,883.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,832,659.92 : 30,129,099.72 = 12,042,883.28 : x
2. Step 2: Convert to fraction form
   21,832,659.92/30,129,099.72 = 12,042,883.28/x
3. Step 3: Cross multiply
   21,832,659.92x = 30,129,099.72 × 12,042,883.28
4. Step 4: Simplify right side
   21,832,659.92x = 362,841,231,259,440.62
5. Step 5: Solve for x
   x = 362,841,231,259,440.62/21,832,659.92
6. Step 6: Final answer
   x = 16,619,194.94