Finding the Fourth Proportional to 21,499,287, 29,669,016.42 and 11,841,495

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499,287 : 29,669,016.42 = 11,841,495 : x
2. Step 2: Convert to fraction form
   21,499,287/29,669,016.42 = 11,841,495/x
3. Step 3: Cross multiply
   21,499,287x = 29,669,016.42 × 11,841,495
4. Step 4: Simplify right side
   21,499,287x = 351,325,509,592,347.94
5. Step 5: Solve for x
   x = 351,325,509,592,347.94/21,499,287
6. Step 6: Final answer
   x = 16,341,263.30