Finding the Fourth Proportional to 12,786,780.49, 19,181,453.77 and 3,689,103.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786,780.49 : 19,181,453.77 = 3,689,103.49 : x
2. Step 2: Convert to fraction form
   12,786,780.49/19,181,453.77 = 3,689,103.49/x
3. Step 3: Cross multiply
   12,786,780.49x = 19,181,453.77 × 3,689,103.49
4. Step 4: Simplify right side
   12,786,780.49x = 70,762,368,002,838.39
5. Step 5: Solve for x
   x = 70,762,368,002,838.39/12,786,780.49
6. Step 6: Final answer
   x = 5,534,025.40