Finding the Fourth Proportional to 12,737,453.69, 19,109,132.18 and 3,639,669.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,737,453.69 : 19,109,132.18 = 3,639,669.77 : x
2. Step 2: Convert to fraction form
   12,737,453.69/19,109,132.18 = 3,639,669.77/x
3. Step 3: Cross multiply
   12,737,453.69x = 19,109,132.18 × 3,639,669.77
4. Step 4: Simplify right side
   12,737,453.69x = 69,550,930,708,281.85
5. Step 5: Solve for x
   x = 69,550,930,708,281.85/12,737,453.69
6. Step 6: Final answer
   x = 5,460,348.07