Finding the Fourth Proportional to 12,139,631.72, 18,210,673.30 and 3,941,931.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139,631.72 : 18,210,673.30 = 3,941,931.18 : x
2. Step 2: Convert to fraction form
   12,139,631.72/18,210,673.30 = 3,941,931.18/x
3. Step 3: Cross multiply
   12,139,631.72x = 18,210,673.30 × 3,941,931.18
4. Step 4: Simplify right side
   12,139,631.72x = 71,785,220,890,063.50
5. Step 5: Solve for x
   x = 71,785,220,890,063.50/12,139,631.72
6. Step 6: Final answer
   x = 5,913,294.78