Finding the Fourth Proportional to 21,860,699.34, 30,170,424.88 and 12,693,341.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,860,699.34 : 30,170,424.88 = 12,693,341.82 : x
2. Step 2: Convert to fraction form
   21,860,699.34/30,170,424.88 = 12,693,341.82/x
3. Step 3: Cross multiply
   21,860,699.34x = 30,170,424.88 × 12,693,341.82
4. Step 4: Simplify right side
   21,860,699.34x = 382,963,515,856,472.50
5. Step 5: Solve for x
   x = 382,963,515,856,472.50/21,860,699.34
6. Step 6: Final answer
   x = 17,518,356.11