Finding the Fourth Proportional to 12,139,630.72, 18,210,671.80 and 3,941,930.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139,630.72 : 18,210,671.80 = 3,941,930.18 : x
2. Step 2: Convert to fraction form
   12,139,630.72/18,210,671.80 = 3,941,930.18/x
3. Step 3: Cross multiply
   12,139,630.72x = 18,210,671.80 × 3,941,930.18
4. Step 4: Simplify right side
   12,139,630.72x = 71,785,196,766,494.94
5. Step 5: Solve for x
   x = 71,785,196,766,494.94/12,139,630.72
6. Step 6: Final answer
   x = 5,913,293.28