Finding the Fourth Proportional to 22,107,961.88, 30,509,108.42 and 12,821,038.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,107,961.88 : 30,509,108.42 = 12,821,038.18 : x
2. Step 2: Convert to fraction form
   22,107,961.88/30,509,108.42 = 12,821,038.18/x
3. Step 3: Cross multiply
   22,107,961.88x = 30,509,108.42 × 12,821,038.18
4. Step 4: Simplify right side
   22,107,961.88x = 391,158,443,890,579.50
5. Step 5: Solve for x
   x = 391,158,443,890,579.50/22,107,961.88
6. Step 6: Final answer
   x = 17,693,102.87