Finding the Fourth Proportional to 12,139,454.34, 18,206,819.24 and 3,502,947.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139,454.34 : 18,206,819.24 = 3,502,947.60 : x
2. Step 2: Convert to fraction form
   12,139,454.34/18,206,819.24 = 3,502,947.60/x
3. Step 3: Cross multiply
   12,139,454.34x = 18,206,819.24 × 3,502,947.60
4. Step 4: Simplify right side
   12,139,454.34x = 63,777,533,760,391.82
5. Step 5: Solve for x
   x = 63,777,533,760,391.82/12,139,454.34
6. Step 6: Final answer
   x = 5,253,739.75