Finding the Fourth Proportional to 22,686,404,069.62, 31,309,982,910.82 and 12,911,917,592.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,686,404,069.62 : 31,309,982,910.82 = 12,911,917,592.28 : x
2. Step 2: Convert to fraction form
   22,686,404,069.62/31,309,982,910.82 = 12,911,917,592.28/x
3. Step 3: Cross multiply
   22,686,404,069.62x = 31,309,982,910.82 × 12,911,917,592.28
4. Step 4: Simplify right side
   22,686,404,069.62x = 404,271,919,160,202,952,704
5. Step 5: Solve for x
   x = 404,271,919,160,202,952,704/22,686,404,069.62
6. Step 6: Final answer
   x = 17,820,008,755.89