Finding the Fourth Proportional to 21,960,389.31, 30,305,340.06 and 12,171,465.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,960,389.31 : 30,305,340.06 = 12,171,465.46 : x
2. Step 2: Convert to fraction form
   21,960,389.31/30,305,340.06 = 12,171,465.46/x
3. Step 3: Cross multiply
   21,960,389.31x = 30,305,340.06 × 12,171,465.46
4. Step 4: Simplify right side
   21,960,389.31x = 368,860,399,793,844.31
5. Step 5: Solve for x
   x = 368,860,399,793,844.31/21,960,389.31
6. Step 6: Final answer
   x = 16,796,623.89