Finding the Fourth Proportional to 2,689,843.30, 4,042,638.15 and 2,642,604.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689,843.30 : 4,042,638.15 = 2,642,604.10 : x
2. Step 2: Convert to fraction form
   2,689,843.30/4,042,638.15 = 2,642,604.10/x
3. Step 3: Cross multiply
   2,689,843.30x = 4,042,638.15 × 2,642,604.10
4. Step 4: Simplify right side
   2,689,843.30x = 10,683,092,150,006.42
5. Step 5: Solve for x
   x = 10,683,092,150,006.42/2,689,843.30
6. Step 6: Final answer
   x = 3,971,641.08