Finding the Fourth Proportional to 21,066,411.92, 31,571,872.88 and 8,920,846.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,066,411.92 : 31,571,872.88 = 8,920,846.82 : x
2. Step 2: Convert to fraction form
   21,066,411.92/31,571,872.88 = 8,920,846.82/x
3. Step 3: Cross multiply
   21,066,411.92x = 31,571,872.88 × 8,920,846.82
4. Step 4: Simplify right side
   21,066,411.92x = 281,647,841,817,317.69
5. Step 5: Solve for x
   x = 281,647,841,817,317.69/21,066,411.92
6. Step 6: Final answer
   x = 13,369,521.25