Finding the Fourth Proportional to 10,805,693.89, 16,209,675.99 and 3,519,721.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,805,693.89 : 16,209,675.99 = 3,519,721.43 : x
2. Step 2: Convert to fraction form
   10,805,693.89/16,209,675.99 = 3,519,721.43/x
3. Step 3: Cross multiply
   10,805,693.89x = 16,209,675.99 × 3,519,721.43
4. Step 4: Simplify right side
   10,805,693.89x = 57,053,543,874,311.09
5. Step 5: Solve for x
   x = 57,053,543,874,311.09/10,805,693.89
6. Step 6: Final answer
   x = 5,279,951.89