Finding the Fourth Proportional to 21,860,697.83, 30,170,422.82 and 12,693,340.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,860,697.83 : 30,170,422.82 = 12,693,340.31 : x
2. Step 2: Convert to fraction form
   21,860,697.83/30,170,422.82 = 12,693,340.31/x
3. Step 3: Cross multiply
   21,860,697.83x = 30,170,422.82 × 12,693,340.31
4. Step 4: Simplify right side
   21,860,697.83x = 382,963,444,087,383.19
5. Step 5: Solve for x
   x = 382,963,444,087,383.19/21,860,697.83
6. Step 6: Final answer
   x = 17,518,354.04